Got a very reluctant courieresmptd that refuses to talk
on port 25 using a 0.37.2 Debian package with authmysql.
Local mail is delivered so it's obviously accessing MySQL
and the rest of the chain just fine but telnetting to it's
port 25 just gets the Subject line.
# ps aux | grep courieremsptd
root 1943 0.0 0.1 1488 608 pts/1 S 02:23 0:00 \
strace -f /usr/sbin/couriertcpd -stderrlogger=/usr/sbin/courierlogger \
-user=daemon -group=daemon -access=/etc/courier/smtpaccess.dat \
-maxprocs=40 -maxperc=5 -maxperip=5 -pid=/var/run/courier/esmtpd.pid \
smtp /usr/sbin/courieresmtpd
daemon 1948 0.0 0.0 1448 336 ? S 02:23 0:00 \
/usr/sbin/courierlogger courieresmtpd
The strace -f sits at this point below and when accessed
with a "telnet host 25" from another box it at least shows
some sign of life.
) = 1 (in [5])
[pid 1946] rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
[pid 1946] rt_sigprocmask(SIG_SETMASK, [], [CHLD], 8) = 0
[pid 1946] accept(5, {sin_family=AF_INET6, sin6_port=htons(48773), \
inet_pton(AF_INET6, "::ffff:203.xx.xx.xx", &sin6_addr), \
sin6_flowinfo=0, sin6_scope_id=0}, [24]) = 6
[pid 1946] close(6) = 0
[pid 1946] select(6, [5], NULL, NULL, NULL
The only vague thing I can string together is maybe the
currently used kernel does not have any ipv6 code or modules
compiled in... would this be enough to stop an otherwise
working courier-mta (internally) from talking via port 25 ?
Linux ssl 2.2.15 #1 Fri May 19 14:44:30 EST 2000 i686 unknown
--markc
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