# Regular cases, ASCII.
host A@B
user A@B
all A@B
none A@B
# Corner cases, ASCII.
host A
host A@
host @
user @B
user @
all @
user Δημοσθένους@Δημοσθένους.EXAMPLE.COM
host Δημοσθένους@Δημοσθένους.EXAMPLE.COM
all Δημοσθένους@Δημοσθένους.EXAMPLE.COM
user Δημοσθένους@
user Δημοσθένους
host Δημοσθένους@
host @Δημοσθένους.EXAMPLE.COM
