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postfix-2.3-20051228

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This commit is contained in:
Wietse Venema
2005-12-28 00:00:00 -05:00
committed by Viktor Dukhovni
parent 29f0936a9d
commit 4049d5fab2
16 changed files with 346 additions and 130 deletions
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17
postfix/HISTORY
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@@ -11690,6 +11690,23 @@ Apologies for any names omitted.
(example: sockaddr_to_hostaddr: Unknown error: success).
File: util/myaddrinfo.c.
20051228
Workaround: don't pipeline the DOT+QUIT commands in the
SMTP client. The 20050929 paranoia about malformed server
replies eliminated a rare occurrence of "lost mail" with
sites that mis-implement DOT+QUIT pipelining. However, we
now have a larger occurrence of repeated deliveries to sites
with different implementation errors.
The default "smtp_pipeline_dot_quit = never" setting
eliminates the repeated deliveries at the cost of a small
performance loss with normal deliveries. Other settings
are "always" (always pipeline the DOT+QUIT commands, when
pipelining is enabled) and "newmail" (pipeline DOT+QUIT
only when mail is newer than $minimal_backoff_time).
Files: smtp/smtp_proto.c, smtp/smtp.c.
Open problems:
"postsuper -r" no longer resets the message arrival time,

14
postfix/RELEASE_NOTES
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@@ -17,6 +17,20 @@ Incompatibility with Postfix 2.1 and earlier
If you upgrade from Postfix 2.1 or earlier, read RELEASE_NOTES-2.2
before proceeding.
Incompatibility with snapshot 20051228
======================================
New parameter "smtp_pipeline_dot_quit" (default: "never") to work
around broken servers and firewalls. After one documented case of
lost mail, as of 20050929 Postfix is more paranoid about malformed
SMTP server replies. Unfortuately this results in repeated delivery
attempts with other broken systems. To avoid this, the SMTP+LMTP
client no longer pipelines the DOT+QUIT commands by default. Instead
of "never" you can specify "always" (self-evident) or "newmail"
(pipeline DOT+QUIT only when mail is newer than $minimal_backoff_time,
so that the number of duplicate deliveries is limited). More details
are in the postconf(5) manual.
Major changes with snapshot 20051222
====================================

50
postfix/html/postconf.5.html
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@@ -3224,7 +3224,7 @@ case insensitive lists of LHLO keywords (pipelining, starttls,
auth, etc.) that the LMTP client will ignore in the LHLO response
from a remote LMTP server. See <a href="postconf.5.html#lmtp_discard_lhlo_keywords">lmtp_discard_lhlo_keywords</a> for
details. The table is not indexed by hostname for consistency with
smtpd_discard_ehlo_keyword_address_map </p>
<a href="postconf.5.html#smtpd_discard_ehlo_keyword_address_maps">smtpd_discard_ehlo_keyword_address_maps</a>. </p>
<p> This feature is available in Postfix 2.3 and later. </p>
@@ -3377,6 +3377,15 @@ parameter. See there for details. </p>
<p> This feature is available in Postfix 2.3 and later. </p>
</DD>
<DT><b><a name="lmtp_pipeline_dot_quit">lmtp_pipeline_dot_quit</a>
(default: never)</b></DT><DD>
<p> The LMTP-specific version of the <a href="postconf.5.html#smtp_pipeline_dot_quit">smtp_pipeline_dot_quit</a>
configuration parameter. See there for details. </p>
</DD>
<DT><b><a name="lmtp_pix_workaround_delay_time">lmtp_pix_workaround_delay_time</a>
@@ -6892,6 +6901,45 @@ complete the EHLO and TLS handshake (Postfix version 2.3 and later). </p>
<a href="postconf.5.html#smtp_always_send_ehlo">smtp_always_send_ehlo</a> parameter. </p>
</DD>
<DT><b><a name="smtp_pipeline_dot_quit">smtp_pipeline_dot_quit</a>
(default: never)</b></DT><DD>
<p> When ESMTP command pipelining is enabled, whether or not the
SMTP client will send the QUIT command before it has received the
server's END-OF-DATA reply. </p>
<p> Specify one of the following: </p>
<dl>
<dt> <b>always</b> </dt> <dd> Always pipeline the END-OF-DATA and
QUIT commands. With servers or firewalls that mis-implement
END-OF-DATA + QUIT pipelining, mail will be delivered repeatedly
until it expires in the queue. </dd>
<dt> <b>never</b> </dt> <dd> Wait for the server's END-OF-DATA reply
before sending the QUIT command. This avoids repeated delivery
attempts with servers and firewalls that mis-implement END-OF-DATA
+ QUIT pipelining, at the cost of a small performance loss with
sites that correctly implement SMTP. </dd>
<dt> <b>newmail</b> </dt> <dd> Pipeline the END-OF-DATA and QUIT
commands only when mail is newer than $<a href="postconf.5.html#minimal_backoff_time">minimal_backoff_time</a>. This
limits the number of repeated deliveries with servers and firewalls
that mis-implement END-OF-DATA + QUIT pipelining, while avoiding
the performance loss associated with the "never" setting for normal
deliveries. </dd>
</dl>
<p> Note: when <a href="postconf.5.html#smtp_fallback_relay">smtp_fallback_relay</a> is used, the "always" and "newmail"
settings become identical in practice. </p>
<p> This feature is available in Postfix 2.3 and later. </p>
</DD>
<DT><b><a name="smtp_pix_workaround_delay_time">smtp_pix_workaround_delay_time</a>

240
postfix/html/smtp.8.html
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@@ -170,18 +170,24 @@ SMTP(8) SMTP(8)
The maximal length of message header and body lines
that Postfix will send via SMTP.
<b><a href="postconf.5.html#smtp_pipeline_dot_quit">smtp_pipeline_dot_quit</a> (never)</b>
When ESMTP command pipelining is enabled, whether
or not the SMTP client will send the QUIT command
before it has received the server's END-OF-DATA
reply.
<b><a href="postconf.5.html#smtp_pix_workaround_delay_time">smtp_pix_workaround_delay_time</a> (10s)</b>
How long the Postfix SMTP client pauses before
How long the Postfix SMTP client pauses before
sending ".&lt;CR&gt;&lt;LF&gt;" in order to work around the PIX
firewall "&lt;CR&gt;&lt;LF&gt;.&lt;CR&gt;&lt;LF&gt;" bug.
<b><a href="postconf.5.html#smtp_pix_workaround_threshold_time">smtp_pix_workaround_threshold_time</a> (500s)</b>
How long a message must be queued before the PIX
firewall "&lt;CR&gt;&lt;LF&gt;.&lt;CR&gt;&lt;LF&gt;" bug workaround is
How long a message must be queued before the PIX
firewall "&lt;CR&gt;&lt;LF&gt;.&lt;CR&gt;&lt;LF&gt;" bug workaround is
turned on.
<b><a href="postconf.5.html#smtp_quote_rfc821_envelope">smtp_quote_rfc821_envelope</a> (yes)</b>
Quote addresses in SMTP MAIL FROM and RCPT TO com-
Quote addresses in SMTP MAIL FROM and RCPT TO com-
mands as required by <a href="http://www.faqs.org/rfcs/rfc821.html">RFC 821</a>.
<b><a href="postconf.5.html#smtp_skip_5xx_greeting">smtp_skip_5xx_greeting</a> (yes)</b>
@@ -189,7 +195,7 @@ SMTP(8) SMTP(8)
(go away, do not try again later).
<b><a href="postconf.5.html#smtp_skip_quit_response">smtp_skip_quit_response</a> (yes)</b>
Do not wait for the response to the SMTP QUIT com-
Do not wait for the response to the SMTP QUIT com-
mand.
Available in Postfix version 2.0 and earlier:
@@ -201,36 +207,36 @@ SMTP(8) SMTP(8)
Available in Postfix version 2.2 and later:
<b><a href="postconf.5.html#smtp_discard_ehlo_keyword_address_maps">smtp_discard_ehlo_keyword_address_maps</a> (empty)</b>
Lookup tables, indexed by the remote SMTP server
address, with case insensitive lists of EHLO key-
words (pipelining, starttls, auth, etc.) that the
Lookup tables, indexed by the remote SMTP server
address, with case insensitive lists of EHLO key-
words (pipelining, starttls, auth, etc.) that the
SMTP client will ignore in the EHLO response from a
remote SMTP server.
<b><a href="postconf.5.html#smtp_discard_ehlo_keywords">smtp_discard_ehlo_keywords</a> (empty)</b>
A case insensitive list of EHLO keywords (pipelin-
ing, starttls, auth, etc.) that the SMTP client
A case insensitive list of EHLO keywords (pipelin-
ing, starttls, auth, etc.) that the SMTP client
will ignore in the EHLO response from a remote SMTP
server.
<b><a href="postconf.5.html#smtp_generic_maps">smtp_generic_maps</a> (empty)</b>
Optional lookup tables that perform address rewrit-
ing in the SMTP client, typically to transform a
ing in the SMTP client, typically to transform a
locally valid address into a globally valid address
when sending mail across the Internet.
Available in Postfix version 2.3 and later:
<b><a href="postconf.5.html#lmtp_discard_lhlo_keyword_address_maps">lmtp_discard_lhlo_keyword_address_maps</a> (empty)</b>
Lookup tables, indexed by the remote LMTP server
address, with case insensitive lists of LHLO key-
words (pipelining, starttls, auth, etc.) that the
Lookup tables, indexed by the remote LMTP server
address, with case insensitive lists of LHLO key-
words (pipelining, starttls, auth, etc.) that the
LMTP client will ignore in the LHLO response from a
remote LMTP server.
<b><a href="postconf.5.html#lmtp_discard_lhlo_keywords">lmtp_discard_lhlo_keywords</a> ($<a href="postconf.5.html#myhostname">myhostname</a>)</b>
A case insensitive list of LHLO keywords (pipelin-
ing, starttls, auth, etc.) that the LMTP client
A case insensitive list of LHLO keywords (pipelin-
ing, starttls, auth, etc.) that the LMTP client
will ignore in the LHLO response from a remote LMTP
server.
@@ -238,7 +244,7 @@ SMTP(8) SMTP(8)
Available in Postfix version 2.0 and later:
<b><a href="postconf.5.html#disable_mime_output_conversion">disable_mime_output_conversion</a> (no)</b>
Disable the conversion of 8BITMIME format to 7BIT
Disable the conversion of 8BITMIME format to 7BIT
format.
<b><a href="postconf.5.html#mime_boundary_length_limit">mime_boundary_length_limit</a> (2048)</b>
@@ -253,132 +259,132 @@ SMTP(8) SMTP(8)
Available in Postfix version 2.1 and later:
<b><a href="postconf.5.html#smtp_send_xforward_command">smtp_send_xforward_command</a> (no)</b>
Send the non-standard XFORWARD command when the
Postfix SMTP server EHLO response announces XFOR-
Send the non-standard XFORWARD command when the
Postfix SMTP server EHLO response announces XFOR-
WARD support.
<b>SASL AUTHENTICATION CONTROLS</b>
<b><a href="postconf.5.html#smtp_sasl_auth_enable">smtp_sasl_auth_enable</a> (no)</b>
Enable SASL authentication in the Postfix SMTP
Enable SASL authentication in the Postfix SMTP
client.
<b><a href="postconf.5.html#smtp_sasl_password_maps">smtp_sasl_password_maps</a> (empty)</b>
Optional SMTP client lookup tables with one user-
name:password entry per remote hostname or domain,
Optional SMTP client lookup tables with one user-
name:password entry per remote hostname or domain,
or sender address when sender-dependent authentica-
tion is enabled.
<b><a href="postconf.5.html#smtp_sasl_security_options">smtp_sasl_security_options</a> (noplaintext, noanonymous)</b>
SASL security options; as of Postfix 2.3 the list
of available features depends on the SASL client
implementation that is selected with
SASL security options; as of Postfix 2.3 the list
of available features depends on the SASL client
implementation that is selected with
<b><a href="postconf.5.html#smtp_sasl_type">smtp_sasl_type</a></b>.
Available in Postfix version 2.2 and later:
<b><a href="postconf.5.html#smtp_sasl_mechanism_filter">smtp_sasl_mechanism_filter</a> (empty)</b>
If non-empty, a Postfix SMTP client filter for the
remote SMTP server's list of offered SASL mecha-
If non-empty, a Postfix SMTP client filter for the
remote SMTP server's list of offered SASL mecha-
nisms.
Available in Postfix version 2.3 and later:
<b><a href="postconf.5.html#smtp_sender_dependent_authentication">smtp_sender_dependent_authentication</a> (no)</b>
Enable sender-dependent authentication in the SMTP
client; this is available only with SASL authenti-
cation, and disables SMTP connection caching to
ensure that mail from different senders will use
Enable sender-dependent authentication in the SMTP
client; this is available only with SASL authenti-
cation, and disables SMTP connection caching to
ensure that mail from different senders will use
the appropriate credentials.
<b><a href="postconf.5.html#smtp_sasl_path">smtp_sasl_path</a> (empty)</b>
Implementation-specific information that is passed
through to the SASL plug-in implementation that is
Implementation-specific information that is passed
through to the SASL plug-in implementation that is
selected with <b><a href="postconf.5.html#smtp_sasl_type">smtp_sasl_type</a></b>.
<b><a href="postconf.5.html#smtp_sasl_type">smtp_sasl_type</a> (cyrus)</b>
The SASL plug-in type that the Postfix SMTP client
The SASL plug-in type that the Postfix SMTP client
should use for authentication.
<b>STARTTLS SUPPORT CONTROLS</b>
Detailed information about STARTTLS configuration may be
Detailed information about STARTTLS configuration may be
found in the <a href="TLS_README.html">TLS_README</a> document.
<b><a href="postconf.5.html#smtp_use_tls">smtp_use_tls</a> (no)</b>
Opportunistic mode: use TLS when a remote SMTP
server announces STARTTLS support, otherwise send
Opportunistic mode: use TLS when a remote SMTP
server announces STARTTLS support, otherwise send
the mail in the clear.
<b><a href="postconf.5.html#smtp_enforce_tls">smtp_enforce_tls</a> (no)</b>
Enforcement mode: require that remote SMTP servers
use TLS encryption, and never send mail in the
Enforcement mode: require that remote SMTP servers
use TLS encryption, and never send mail in the
clear.
<b><a href="postconf.5.html#smtp_sasl_tls_security_options">smtp_sasl_tls_security_options</a> ($<a href="postconf.5.html#smtp_sasl_security_options">smtp_sasl_secu</a>-</b>
<b><a href="postconf.5.html#smtp_sasl_security_options">rity_options</a>)</b>
The SASL authentication security options that the
Postfix SMTP client uses for TLS encrypted SMTP
The SASL authentication security options that the
Postfix SMTP client uses for TLS encrypted SMTP
sessions.
<b><a href="postconf.5.html#smtp_starttls_timeout">smtp_starttls_timeout</a> (300s)</b>
Time limit for Postfix SMTP client write and read
operations during TLS startup and shutdown hand-
Time limit for Postfix SMTP client write and read
operations during TLS startup and shutdown hand-
shake procedures.
<b><a href="postconf.5.html#smtp_tls_CAfile">smtp_tls_CAfile</a> (empty)</b>
The file with the certificate of the certification
authority (CA) that issued the Postfix SMTP client
The file with the certificate of the certification
authority (CA) that issued the Postfix SMTP client
certificate.
<b><a href="postconf.5.html#smtp_tls_CApath">smtp_tls_CApath</a> (empty)</b>
Directory with PEM format certificate authority
certificates that the Postfix SMTP client uses to
Directory with PEM format certificate authority
certificates that the Postfix SMTP client uses to
verify a remote SMTP server certificate.
<b><a href="postconf.5.html#smtp_tls_cert_file">smtp_tls_cert_file</a> (empty)</b>
File with the Postfix SMTP client RSA certificate
File with the Postfix SMTP client RSA certificate
in PEM format.
<b><a href="postconf.5.html#smtp_tls_cipherlist">smtp_tls_cipherlist</a> (empty)</b>
Controls the Postfix SMTP client TLS cipher selec-
Controls the Postfix SMTP client TLS cipher selec-
tion scheme.
<b><a href="postconf.5.html#smtp_tls_dcert_file">smtp_tls_dcert_file</a> (empty)</b>
File with the Postfix SMTP client DSA certificate
File with the Postfix SMTP client DSA certificate
in PEM format.
<b><a href="postconf.5.html#smtp_tls_dkey_file">smtp_tls_dkey_file</a> ($<a href="postconf.5.html#smtp_tls_dcert_file">smtp_tls_dcert_file</a>)</b>
File with the Postfix SMTP client DSA private key
File with the Postfix SMTP client DSA private key
in PEM format.
<b><a href="postconf.5.html#smtp_tls_enforce_peername">smtp_tls_enforce_peername</a> (yes)</b>
When TLS encryption is enforced, require that the
When TLS encryption is enforced, require that the
remote SMTP server hostname matches the information
in the remote SMTP server certificate.
<b><a href="postconf.5.html#smtp_tls_key_file">smtp_tls_key_file</a> ($<a href="postconf.5.html#smtp_tls_cert_file">smtp_tls_cert_file</a>)</b>
File with the Postfix SMTP client RSA private key
File with the Postfix SMTP client RSA private key
in PEM format.
<b><a href="postconf.5.html#smtp_tls_loglevel">smtp_tls_loglevel</a> (0)</b>
Enable additional Postfix SMTP client logging of
Enable additional Postfix SMTP client logging of
TLS activity.
<b><a href="postconf.5.html#smtp_tls_note_starttls_offer">smtp_tls_note_starttls_offer</a> (no)</b>
Log the hostname of a remote SMTP server that
offers STARTTLS, when TLS is not already enabled
Log the hostname of a remote SMTP server that
offers STARTTLS, when TLS is not already enabled
for that server.
<b><a href="postconf.5.html#smtp_tls_per_site">smtp_tls_per_site</a> (empty)</b>
Optional lookup tables with the Postfix SMTP client
TLS usage policy by next-hop domain name and by
TLS usage policy by next-hop domain name and by
remote SMTP server hostname.
<b><a href="postconf.5.html#smtp_tls_scert_verifydepth">smtp_tls_scert_verifydepth</a> (5)</b>
The verification depth for remote SMTP server cer-
The verification depth for remote SMTP server cer-
tificates.
<b><a href="postconf.5.html#smtp_tls_session_cache_database">smtp_tls_session_cache_database</a> (empty)</b>
Name of the file containing the optional Postfix
Name of the file containing the optional Postfix
SMTP client TLS session cache.
<b><a href="postconf.5.html#smtp_tls_session_cache_timeout">smtp_tls_session_cache_timeout</a> (3600s)</b>
@@ -386,35 +392,35 @@ SMTP(8) SMTP(8)
sion cache information.
<b><a href="postconf.5.html#tls_daemon_random_bytes">tls_daemon_random_bytes</a> (32)</b>
The number of pseudo-random bytes that an <a href="smtp.8.html"><b>smtp</b>(8)</a>
or <a href="smtpd.8.html"><b>smtpd</b>(8)</a> process requests from the <a href="tlsmgr.8.html"><b>tlsmgr</b>(8)</a>
server in order to seed its internal pseudo random
The number of pseudo-random bytes that an <a href="smtp.8.html"><b>smtp</b>(8)</a>
or <a href="smtpd.8.html"><b>smtpd</b>(8)</a> process requests from the <a href="tlsmgr.8.html"><b>tlsmgr</b>(8)</a>
server in order to seed its internal pseudo random
number generator (PRNG).
<b>RESOURCE AND RATE CONTROLS</b>
<b><a href="postconf.5.html#smtp_destination_concurrency_limit">smtp_destination_concurrency_limit</a> ($<a href="postconf.5.html#default_destination_concurrency_limit">default_destina</a>-</b>
<b><a href="postconf.5.html#default_destination_concurrency_limit">tion_concurrency_limit</a>)</b>
The maximal number of parallel deliveries to the
same destination via the smtp message delivery
The maximal number of parallel deliveries to the
same destination via the smtp message delivery
transport.
<b><a href="postconf.5.html#smtp_destination_recipient_limit">smtp_destination_recipient_limit</a> ($<a href="postconf.5.html#default_destination_recipient_limit">default_destina</a>-</b>
<b><a href="postconf.5.html#default_destination_recipient_limit">tion_recipient_limit</a>)</b>
The maximal number of recipients per delivery via
The maximal number of recipients per delivery via
the smtp message delivery transport.
<b><a href="postconf.5.html#smtp_connect_timeout">smtp_connect_timeout</a> (30s)</b>
The SMTP client time limit for completing a TCP
The SMTP client time limit for completing a TCP
connection, or zero (use the operating system
built-in time limit).
<b><a href="postconf.5.html#smtp_helo_timeout">smtp_helo_timeout</a> (300s)</b>
The SMTP client time limit for sending the HELO or
EHLO command, and for receiving the initial server
The SMTP client time limit for sending the HELO or
EHLO command, and for receiving the initial server
response.
<b><a href="postconf.5.html#lmtp_lhlo_timeout">lmtp_lhlo_timeout</a> (300s)</b>
The LMTP client time limit for sending the LHLO
The LMTP client time limit for sending the LHLO
command, and for receiving the initial server
response.
@@ -423,30 +429,30 @@ SMTP(8) SMTP(8)
command, and for receiving the server response.
<b><a href="postconf.5.html#smtp_mail_timeout">smtp_mail_timeout</a> (300s)</b>
The SMTP client time limit for sending the MAIL
FROM command, and for receiving the server
The SMTP client time limit for sending the MAIL
FROM command, and for receiving the server
response.
<b><a href="postconf.5.html#smtp_rcpt_timeout">smtp_rcpt_timeout</a> (300s)</b>
The SMTP client time limit for sending the SMTP
RCPT TO command, and for receiving the server
The SMTP client time limit for sending the SMTP
RCPT TO command, and for receiving the server
response.
<b><a href="postconf.5.html#smtp_data_init_timeout">smtp_data_init_timeout</a> (120s)</b>
The SMTP client time limit for sending the SMTP
DATA command, and for receiving the server
The SMTP client time limit for sending the SMTP
DATA command, and for receiving the server
response.
<b><a href="postconf.5.html#smtp_data_xfer_timeout">smtp_data_xfer_timeout</a> (180s)</b>
The SMTP client time limit for sending the SMTP
The SMTP client time limit for sending the SMTP
message content.
<b><a href="postconf.5.html#smtp_data_done_timeout">smtp_data_done_timeout</a> (600s)</b>
The SMTP client time limit for sending the SMTP
The SMTP client time limit for sending the SMTP
".", and for receiving the server response.
<b><a href="postconf.5.html#smtp_quit_timeout">smtp_quit_timeout</a> (300s)</b>
The SMTP client time limit for sending the QUIT
The SMTP client time limit for sending the QUIT
command, and for receiving the server response.
Available in Postfix version 2.1 and later:
@@ -457,12 +463,12 @@ SMTP(8) SMTP(8)
lookups, or zero (no limit).
<b><a href="postconf.5.html#smtp_mx_session_limit">smtp_mx_session_limit</a> (2)</b>
The maximal number of SMTP sessions per delivery
request before giving up or delivering to a fall-
The maximal number of SMTP sessions per delivery
request before giving up or delivering to a fall-
back <a href="postconf.5.html#relayhost">relay host</a>, or zero (no limit).
<b><a href="postconf.5.html#smtp_rset_timeout">smtp_rset_timeout</a> (20s)</b>
The SMTP client time limit for sending the RSET
The SMTP client time limit for sending the RSET
command, and for receiving the server response.
Available in Postfix version 2.2 and earlier:
@@ -474,11 +480,11 @@ SMTP(8) SMTP(8)
Available in Postfix version 2.2 and later:
<b><a href="postconf.5.html#smtp_connection_cache_destinations">smtp_connection_cache_destinations</a> (empty)</b>
Permanently enable SMTP connection caching for the
Permanently enable SMTP connection caching for the
specified destinations.
<b><a href="postconf.5.html#smtp_connection_cache_on_demand">smtp_connection_cache_on_demand</a> (yes)</b>
Temporarily enable SMTP connection caching while a
Temporarily enable SMTP connection caching while a
destination has a high volume of mail in the active
queue.
@@ -488,57 +494,57 @@ SMTP(8) SMTP(8)
<b><a href="postconf.5.html#smtp_connection_cache_time_limit">smtp_connection_cache_time_limit</a> (2s)</b>
When SMTP connection caching is enabled, the amount
of time that an unused SMTP client socket is kept
of time that an unused SMTP client socket is kept
open before it is closed.
Available in Postfix version 2.3 and later:
<b><a href="postconf.5.html#connection_cache_protocol_timeout">connection_cache_protocol_timeout</a> (5s)</b>
Time limit for connection cache connect, send or
Time limit for connection cache connect, send or
receive operations.
<b>TROUBLE SHOOTING CONTROLS</b>
<b><a href="postconf.5.html#debug_peer_level">debug_peer_level</a> (2)</b>
The increment in verbose logging level when a
remote client or server matches a pattern in the
The increment in verbose logging level when a
remote client or server matches a pattern in the
<a href="postconf.5.html#debug_peer_list">debug_peer_list</a> parameter.
<b><a href="postconf.5.html#debug_peer_list">debug_peer_list</a> (empty)</b>
Optional list of remote client or server hostname
or network address patterns that cause the verbose
logging level to increase by the amount specified
Optional list of remote client or server hostname
or network address patterns that cause the verbose
logging level to increase by the amount specified
in $<a href="postconf.5.html#debug_peer_level">debug_peer_level</a>.
<b><a href="postconf.5.html#error_notice_recipient">error_notice_recipient</a> (postmaster)</b>
The recipient of postmaster notifications about
mail delivery problems that are caused by policy,
The recipient of postmaster notifications about
mail delivery problems that are caused by policy,
resource, software or protocol errors.
<b><a href="postconf.5.html#notify_classes">notify_classes</a> (resource, software)</b>
The list of error classes that are reported to the
The list of error classes that are reported to the
postmaster.
<b>MISCELLANEOUS CONTROLS</b>
<b><a href="postconf.5.html#best_mx_transport">best_mx_transport</a> (empty)</b>
Where the Postfix SMTP client should deliver mail
Where the Postfix SMTP client should deliver mail
when it detects a "mail loops back to myself" error
condition.
<b><a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)</b>
The default location of the Postfix main.cf and
The default location of the Postfix main.cf and
master.cf configuration files.
<b><a href="postconf.5.html#daemon_timeout">daemon_timeout</a> (18000s)</b>
How much time a Postfix daemon process may take to
handle a request before it is terminated by a
How much time a Postfix daemon process may take to
handle a request before it is terminated by a
built-in watchdog timer.
<b><a href="postconf.5.html#delay_logging_resolution_limit">delay_logging_resolution_limit</a> (2)</b>
The maximal number of digits after the decimal
The maximal number of digits after the decimal
point when logging sub-second delay values.
<b><a href="postconf.5.html#disable_dns_lookups">disable_dns_lookups</a> (no)</b>
Disable DNS lookups in the Postfix SMTP and LMTP
Disable DNS lookups in the Postfix SMTP and LMTP
clients.
<b><a href="postconf.5.html#inet_interfaces">inet_interfaces</a> (all)</b>
@@ -546,7 +552,7 @@ SMTP(8) SMTP(8)
tem receives mail on.
<b><a href="postconf.5.html#inet_protocols">inet_protocols</a> (ipv4)</b>
The Internet protocols Postfix will attempt to use
The Internet protocols Postfix will attempt to use
when making or accepting connections.
<b><a href="postconf.5.html#ipc_timeout">ipc_timeout</a> (3600s)</b>
@@ -554,74 +560,74 @@ SMTP(8) SMTP(8)
over an internal communication channel.
<b><a href="postconf.5.html#lmtp_tcp_port">lmtp_tcp_port</a> (24)</b>
The default TCP port that the Postfix LMTP client
The default TCP port that the Postfix LMTP client
connects to.
<b><a href="postconf.5.html#max_idle">max_idle</a> (100s)</b>
The maximum amount of time that an idle Postfix
daemon process waits for the next service request
The maximum amount of time that an idle Postfix
daemon process waits for the next service request
before exiting.
<b><a href="postconf.5.html#max_use">max_use</a> (100)</b>
The maximal number of connection requests before a
The maximal number of connection requests before a
Postfix daemon process terminates.
<b><a href="postconf.5.html#process_id">process_id</a> (read-only)</b>
The process ID of a Postfix command or daemon
The process ID of a Postfix command or daemon
process.
<b><a href="postconf.5.html#process_name">process_name</a> (read-only)</b>
The process name of a Postfix command or daemon
The process name of a Postfix command or daemon
process.
<b><a href="postconf.5.html#proxy_interfaces">proxy_interfaces</a> (empty)</b>
The network interface addresses that this mail sys-
tem receives mail on by way of a proxy or network
tem receives mail on by way of a proxy or network
address translation unit.
<b><a href="postconf.5.html#smtp_bind_address">smtp_bind_address</a> (empty)</b>
An optional numerical network address that the SMTP
client should bind to when making an IPv4 connec-
client should bind to when making an IPv4 connec-
tion.
<b><a href="postconf.5.html#smtp_bind_address6">smtp_bind_address6</a> (empty)</b>
An optional numerical network address that the SMTP
client should bind to when making an IPv6 connec-
client should bind to when making an IPv6 connec-
tion.
<b><a href="postconf.5.html#smtp_helo_name">smtp_helo_name</a> ($<a href="postconf.5.html#myhostname">myhostname</a>)</b>
The hostname to send in the SMTP EHLO or HELO com-
The hostname to send in the SMTP EHLO or HELO com-
mand.
<b><a href="postconf.5.html#lmtp_lhloname">lmtp_lhlo_name</a> ($<a href="postconf.5.html#myhostname">myhostname</a>)</b>
The hostname to send in the LMTP LHLO command.
<b><a href="postconf.5.html#smtp_host_lookup">smtp_host_lookup</a> (dns)</b>
What mechanisms when the SMTP client uses to look
What mechanisms when the SMTP client uses to look
up a host's IP address.
<b><a href="postconf.5.html#smtp_randomize_addresses">smtp_randomize_addresses</a> (yes)</b>
Randomize the order of equal-preference MX host
Randomize the order of equal-preference MX host
addresses.
<b><a href="postconf.5.html#syslog_facility">syslog_facility</a> (mail)</b>
The syslog facility of Postfix logging.
<b><a href="postconf.5.html#syslog_name">syslog_name</a> (postfix)</b>
The mail system name that is prepended to the
process name in syslog records, so that "smtpd"
The mail system name that is prepended to the
process name in syslog records, so that "smtpd"
becomes, for example, "postfix/smtpd".
Available with Postfix 2.2 and earlier:
<b><a href="postconf.5.html#fallback_relay">fallback_relay</a> (empty)</b>
Optional list of relay hosts for SMTP destinations
Optional list of relay hosts for SMTP destinations
that can't be found or that are unreachable.
Available with Postfix 2.3 and later:
<b><a href="postconf.5.html#smtp_fallback_relay">smtp_fallback_relay</a> ($<a href="postconf.5.html#fallback_relay">fallback_relay</a>)</b>
Optional list of relay hosts for SMTP destinations
Optional list of relay hosts for SMTP destinations
that can't be found or that are unreachable.
<b>SEE ALSO</b>
@@ -639,7 +645,7 @@ SMTP(8) SMTP(8)
<a href="TLS_README.html">TLS_README</a>, Postfix STARTTLS howto
<b>LICENSE</b>
The Secure Mailer license must be distributed with this
The Secure Mailer license must be distributed with this
software.
<b>AUTHOR(S)</b>

34
postfix/man/man5/postconf.5
View File

@@ -1729,7 +1729,7 @@ case insensitive lists of LHLO keywords (pipelining, starttls,
auth, etc.) that the LMTP client will ignore in the LHLO response
from a remote LMTP server. See lmtp_discard_lhlo_keywords for
details. The table is not indexed by hostname for consistency with
smtpd_discard_ehlo_keyword_address_map
smtpd_discard_ehlo_keyword_address_maps.
.PP
This feature is available in Postfix 2.3 and later.
.SH lmtp_discard_lhlo_keywords (default: $myhostname)
@@ -1808,6 +1808,9 @@ The LMTP-specific version of the smtp_mx_session_limit configuration
parameter. See there for details.
.PP
This feature is available in Postfix 2.3 and later.
.SH lmtp_pipeline_dot_quit (default: never)
The LMTP-specific version of the smtp_pipeline_dot_quit
configuration parameter. See there for details.
.SH lmtp_pix_workaround_delay_time (default: 10s)
The LMTP-specific version of the smtp_pix_workaround_delay_time
configuration parameter. See there for details.
@@ -3838,6 +3841,35 @@ This feature is available in Postfix 2.1 and later.
.SH smtp_never_send_ehlo (default: no)
Never send EHLO at the start of an SMTP session. See also the
smtp_always_send_ehlo parameter.
.SH smtp_pipeline_dot_quit (default: never)
When ESMTP command pipelining is enabled, whether or not the
SMTP client will send the QUIT command before it has received the
server's END-OF-DATA reply.
.PP
Specify one of the following:
.IP "\fBalways\fR"
Always pipeline the END-OF-DATA and
QUIT commands. With servers or firewalls that mis-implement
END-OF-DATA + QUIT pipelining, mail will be delivered repeatedly
until it expires in the queue.
.IP "\fBnever\fR"
Wait for the server's END-OF-DATA reply
before sending the QUIT command. This avoids repeated delivery
attempts with servers and firewalls that mis-implement END-OF-DATA
+ QUIT pipelining, at the cost of a small performance loss with
sites that correctly implement SMTP.
.IP "\fBnewmail\fR"
Pipeline the END-OF-DATA and QUIT
commands only when mail is newer than $minimal_backoff_time. This
limits the number of repeated deliveries with servers and firewalls
that mis-implement END-OF-DATA + QUIT pipelining, while avoiding
the performance loss associated with the "never" setting for normal
deliveries.
.PP
Note: when smtp_fallback_relay is used, the "always" and "newmail"
settings become identical in practice.
.PP
This feature is available in Postfix 2.3 and later.
.SH smtp_pix_workaround_delay_time (default: 10s)
How long the Postfix SMTP client pauses before sending
".<CR><LF>" in order to work around the PIX firewall

10
postfix/man/man8/smtp.8
View File

@@ -165,6 +165,10 @@ Defer mail delivery when no MX record resolves to an IP address.
.IP "\fBsmtp_line_length_limit (990)\fR"
The maximal length of message header and body lines that Postfix
will send via SMTP.
.IP "\fBsmtp_pipeline_dot_quit (never)\fR"
When ESMTP command pipelining is enabled, whether or not the
SMTP client will send the QUIT command before it has received the
server's END-OF-DATA reply.
.IP "\fBsmtp_pix_workaround_delay_time (10s)\fR"
How long the Postfix SMTP client pauses before sending
".<CR><LF>" in order to work around the PIX firewall
@@ -190,9 +194,9 @@ again later).
Available in Postfix version 2.2 and later:
.IP "\fBsmtp_discard_ehlo_keyword_address_maps (empty)\fR"
Lookup tables, indexed by the remote SMTP server address, with
case insensitive lists of EHLO keywords (pipelining, starttls,
auth, etc.) that the SMTP client will ignore in the EHLO response
from a remote SMTP server.
case insensitive lists of EHLO keywords (pipelining, starttls, auth,
etc.) that the SMTP client will ignore in the EHLO response from a
remote SMTP server.
.IP "\fBsmtp_discard_ehlo_keywords (empty)\fR"
A case insensitive list of EHLO keywords (pipelining, starttls,
auth, etc.) that the SMTP client will ignore in the EHLO response

1
postfix/mantools/postlink
View File

@@ -387,6 +387,7 @@ while (<>) {
s;\bsmtp_mx_session_limit\b;<a href="postconf.5.html#smtp_mx_session_limit">$&</a>;g;
s;\bsmtp_never_send_ehlo\b;<a href="postconf.5.html#smtp_never_send_ehlo">$&</a>;g;
s;\bsmtp_sender_depen[-</bB>]*\n*[ <bB>]*dent_authentication\b;<a href="postconf.5.html#smtp_sender_dependent_authentication">$&</a>;g;
s;\bsmtp_pipeline_dot_quit\b;<a href="postconf.5.html#smtp_pipeline_dot_quit">$&</a>;g;
s;\bsmtp_pix_workaround_delay_time\b;<a href="postconf.5.html#smtp_pix_workaround_delay_time">$&</a>;g;
s;\bsmtp_pix_workaround_threshold_time\b;<a href="postconf.5.html#smtp_pix_workaround_threshold_time">$&</a>;g;
s;\bsmtp_quit_timeout\b;<a href="postconf.5.html#smtp_quit_timeout">$&</a>;g;

42
postfix/proto/postconf.proto
View File

@@ -8837,7 +8837,7 @@ case insensitive lists of LHLO keywords (pipelining, starttls,
auth, etc.) that the LMTP client will ignore in the LHLO response
from a remote LMTP server. See lmtp_discard_lhlo_keywords for
details. The table is not indexed by hostname for consistency with
smtpd_discard_ehlo_keyword_address_map </p>
smtpd_discard_ehlo_keyword_address_maps. </p>
<p> This feature is available in Postfix 2.3 and later. </p>
@@ -9125,3 +9125,43 @@ is rejected by the <b>reject_plaintext_session</b> restriction.
rejecting the address as invalid. </p>
<p> This feature is available in Postfix 2.3 and later.
%PARAM smtp_pipeline_dot_quit never
<p> When ESMTP command pipelining is enabled, whether or not the
SMTP client will send the QUIT command before it has received the
server's END-OF-DATA reply. </p>
<p> Specify one of the following: </p>
<dl>
<dt> <b>always</b> </dt> <dd> Always pipeline the END-OF-DATA and
QUIT commands. With servers or firewalls that mis-implement
END-OF-DATA + QUIT pipelining, mail will be delivered repeatedly
until it expires in the queue. </dd>
<dt> <b>never</b> </dt> <dd> Wait for the server's END-OF-DATA reply
before sending the QUIT command. This avoids repeated delivery
attempts with servers and firewalls that mis-implement END-OF-DATA
+ QUIT pipelining, at the cost of a small performance loss with
sites that correctly implement SMTP. </dd>
<dt> <b>newmail</b> </dt> <dd> Pipeline the END-OF-DATA and QUIT
commands only when mail is newer than $minimal_backoff_time. This
limits the number of repeated deliveries with servers and firewalls
that mis-implement END-OF-DATA + QUIT pipelining, while avoiding
the performance loss associated with the "never" setting for normal
deliveries. </dd>
</dl>
<p> Note: when smtp_fallback_relay is used, the "always" and "newmail"
settings become identical in practice. </p>
<p> This feature is available in Postfix 2.3 and later. </p>
%PARAM lmtp_pipeline_dot_quit never
<p> The LMTP-specific version of the smtp_pipeline_dot_quit
configuration parameter. See there for details. </p>

10
postfix/src/global/mail_params.h
View File

@@ -1006,6 +1006,16 @@ extern int var_smtp_pix_thresh;
#define DEF_LMTP_PIX_DELAY "10s"
extern int var_smtp_pix_delay;
#define SMTP_PIPE_DOT_QUIT_NEVER "never"
#define SMTP_PIPE_DOT_QUIT_NEWMAIL "newmail"
#define SMTP_PIPE_DOT_QUIT_ALWAYS "always"
#define VAR_SMTP_PIPE_DOT_QUIT "smtp_pipeline_dot_quit"
#define DEF_SMTP_PIPE_DOT_QUIT SMTP_PIPE_DOT_QUIT_NEVER
#define VAR_LMTP_PIPE_DOT_QUIT "lmtp_pipeline_dot_quit"
#define DEF_LMTP_PIPE_DOT_QUIT SMTP_PIPE_DOT_QUIT_NEVER
extern char *var_smtp_pipe_dot_quit;
#define VAR_SMTP_DEFER_MXADDR "smtp_defer_if_no_mx_address_found"
#define DEF_SMTP_DEFER_MXADDR 0
#define VAR_LMTP_DEFER_MXADDR "lmtp_defer_if_no_mx_address_found"

2
postfix/src/global/mail_version.h
View File

@@ -20,7 +20,7 @@
* Patches change both the patchlevel and the release date. Snapshots have no
* patchlevel; they change the release date only.
*/
#define MAIL_RELEASE_DATE "20051227"
#define MAIL_RELEASE_DATE "20051228"
#define MAIL_VERSION_NUMBER "2.3"
#ifdef SNAPSHOT

2
postfix/src/smtp/lmtp_params.c
View File

@@ -22,6 +22,7 @@
VAR_PROP_EXTENSION, DEF_PROP_EXTENSION, &var_prop_extension, 0, 0,
VAR_LMTP_GENERIC_MAPS, DEF_LMTP_GENERIC_MAPS, &var_smtp_generic_maps, 0, 0,
VAR_LMTP_TCP_PORT, DEF_LMTP_TCP_PORT, &var_lmtp_tcp_port, 0, 0,
VAR_LMTP_PIPE_DOT_QUIT, DEF_LMTP_PIPE_DOT_QUIT, &var_smtp_pipe_dot_quit, 1, 0,
0,
};
static CONFIG_TIME_TABLE lmtp_time_table[] = {
@@ -43,6 +44,7 @@
VAR_LMTP_STARTTLS_TMOUT, DEF_LMTP_STARTTLS_TMOUT, &var_smtp_starttls_tmout, 1, 0,
#endif
VAR_SCACHE_PROTO_TMOUT, DEF_SCACHE_PROTO_TMOUT, &var_scache_proto_tmout, 1, 0,
VAR_MIN_BACKOFF_TIME, DEF_MIN_BACKOFF_TIME, &var_min_backoff_time, 1, 0,
0,
};
static CONFIG_INT_TABLE lmtp_int_table[] = {

30
postfix/src/smtp/smtp.c
View File

@@ -143,6 +143,10 @@
/* .IP "\fBsmtp_line_length_limit (990)\fR"
/* The maximal length of message header and body lines that Postfix
/* will send via SMTP.
/* .IP "\fBsmtp_pipeline_dot_quit (never)\fR"
/* When ESMTP command pipelining is enabled, whether or not the
/* SMTP client will send the QUIT command before it has received the
/* server's END-OF-DATA reply.
/* .IP "\fBsmtp_pix_workaround_delay_time (10s)\fR"
/* How long the Postfix SMTP client pauses before sending
/* ".<CR><LF>" in order to work around the PIX firewall
@@ -168,9 +172,9 @@
/* Available in Postfix version 2.2 and later:
/* .IP "\fBsmtp_discard_ehlo_keyword_address_maps (empty)\fR"
/* Lookup tables, indexed by the remote SMTP server address, with
/* case insensitive lists of EHLO keywords (pipelining, starttls,
/* auth, etc.) that the SMTP client will ignore in the EHLO response
/* from a remote SMTP server.
/* case insensitive lists of EHLO keywords (pipelining, starttls, auth,
/* etc.) that the SMTP client will ignore in the EHLO response from a
/* remote SMTP server.
/* .IP "\fBsmtp_discard_ehlo_keywords (empty)\fR"
/* A case insensitive list of EHLO keywords (pipelining, starttls,
/* auth, etc.) that the SMTP client will ignore in the EHLO response
@@ -526,6 +530,7 @@
#include <msg.h>
#include <mymalloc.h>
#include <name_mask.h>
#include <name_code.h>
/* Global library. */
@@ -617,6 +622,8 @@ char *var_prop_extension;
bool var_smtp_sender_auth;
char *var_lmtp_tcp_port;
int var_scache_proto_tmout;
char *var_smtp_pipe_dot_quit;
int var_min_backoff_time;
/*
* Global variables. smtp_errno is set by the address lookup routines and by
@@ -629,6 +636,7 @@ SCACHE *smtp_scache;
MAPS *smtp_ehlo_dis_maps;
MAPS *smtp_generic_maps;
int smtp_ext_prop_mask;
int smtp_pipe_dot_quit;
#ifdef USE_TLS
@@ -722,6 +730,12 @@ static void post_init(char *unused_name, char **unused_argv)
SMTP_HOST_LOOKUP_NATIVE, SMTP_HOST_FLAG_NATIVE,
0,
};
static NAME_CODE pipe_dot_quit_codes[] = {
SMTP_PIPE_DOT_QUIT_NEVER, SMTP_PIPE_DOT_QUIT_CODE_NEVER,
SMTP_PIPE_DOT_QUIT_NEWMAIL, SMTP_PIPE_DOT_QUIT_CODE_NEWMAIL,
SMTP_PIPE_DOT_QUIT_ALWAYS, SMTP_PIPE_DOT_QUIT_CODE_ALWAYS,
0, SMTP_PIPE_DOT_QUIT_CODE_ERROR,
};
/*
* Select hostname lookup mechanisms.
@@ -748,6 +762,16 @@ static void post_init(char *unused_name, char **unused_argv)
var_ipc_idle_limit,
var_ipc_ttl_limit);
#endif
/*
* Initialize dot-quit pipelining workaround.
*/
smtp_pipe_dot_quit = name_code(pipe_dot_quit_codes,
NAME_CODE_FLAG_NONE,
var_smtp_pipe_dot_quit);
if (smtp_pipe_dot_quit == SMTP_PIPE_DOT_QUIT_CODE_ERROR)
msg_fatal("unknown %s value: %s", VAR_SMTP_PIPE_DOT_QUIT,
var_smtp_pipe_dot_quit);
}
/* pre_init - pre-jail initialization */

7
postfix/src/smtp/smtp.h
View File

@@ -166,6 +166,13 @@ extern SSL_CTX *smtp_tls_ctx; /* client-side TLS engine */
#endif
#define SMTP_PIPE_DOT_QUIT_CODE_ERROR 0
#define SMTP_PIPE_DOT_QUIT_CODE_NEVER 1
#define SMTP_PIPE_DOT_QUIT_CODE_NEWMAIL 2
#define SMTP_PIPE_DOT_QUIT_CODE_ALWAYS 3
extern int smtp_pipe_dot_quit;
/*
* smtp_session.c
*/

2
postfix/src/smtp/smtp_chat.c
View File

@@ -289,7 +289,7 @@ SMTP_RESP *smtp_chat_resp(SMTP_SESSION *session)
msg_warn("non-%s response from %s: %s",
(session->state->misc_flags &
SMTP_MISC_FLAG_USE_LMTP) ? "LMTP" : "ESMTP",
session->namaddr, STR(session->buffer));
session->namaddrport, STR(session->buffer));
vstream_longjmp(session->stream, SMTP_ERR_PROTO);
}
}

2
postfix/src/smtp/smtp_params.c
View File

@@ -23,6 +23,7 @@
VAR_PROP_EXTENSION, DEF_PROP_EXTENSION, &var_prop_extension, 0, 0,
VAR_SMTP_GENERIC_MAPS, DEF_SMTP_GENERIC_MAPS, &var_smtp_generic_maps, 0, 0,
VAR_LMTP_TCP_PORT, DEF_LMTP_TCP_PORT, &var_lmtp_tcp_port, 0, 0,
VAR_SMTP_PIPE_DOT_QUIT, DEF_SMTP_PIPE_DOT_QUIT, &var_smtp_pipe_dot_quit, 1, 0,
0,
};
static CONFIG_TIME_TABLE smtp_time_table[] = {
@@ -44,6 +45,7 @@
VAR_SMTP_STARTTLS_TMOUT, DEF_SMTP_STARTTLS_TMOUT, &var_smtp_starttls_tmout, 1, 0,
#endif
VAR_SCACHE_PROTO_TMOUT, DEF_SCACHE_PROTO_TMOUT, &var_scache_proto_tmout, 1, 0,
VAR_MIN_BACKOFF_TIME, DEF_MIN_BACKOFF_TIME, &var_min_backoff_time, 1, 0,
0,
};
static CONFIG_INT_TABLE smtp_int_table[] = {

13
postfix/src/smtp/smtp_proto.c
View File

@@ -926,8 +926,16 @@ static int smtp_loop(SMTP_STATE *state, NOCLOBBER int send_state,
#define SENDER_IS_AHEAD \
(recv_state < send_state || recv_rcpt != send_rcpt)
#define DONT_PIPELINE_DOT_QUIT \
(smtp_pipe_dot_quit == SMTP_PIPE_DOT_QUIT_CODE_NEVER \
|| (smtp_pipe_dot_quit == SMTP_PIPE_DOT_QUIT_CODE_NEWMAIL \
&& request->msg_stats.incoming_arrival.tv_sec \
< vstream_ftime(session->stream) - var_min_backoff_time))
#define SENDER_IN_WAIT_STATE \
(send_state == SMTP_STATE_DOT || send_state == SMTP_STATE_LAST)
(send_state == SMTP_STATE_DOT || send_state == SMTP_STATE_LAST \
|| (recv_state == SMTP_STATE_DOT && send_state == SMTP_STATE_QUIT \
&& DONT_PIPELINE_DOT_QUIT))
#define SENDING_MAIL \
(recv_state <= SMTP_STATE_DOT)
@@ -1144,7 +1152,8 @@ static int smtp_loop(SMTP_STATE *state, NOCLOBBER int send_state,
break;
/*
* Build the "." command before we have seen the DATA response.
* Build the "." command after we have seen the DATA response
* (DATA is a protocol synchronization point).
*
* Changing the connection caching state here is safe because it
* affects none of the not-yet processed replies to