Paul B. Henson:
> We recently upgraded some systems from postfix 2.6.6 to postfix 2.7.4,
> and the behavior when trying to submit messages through the sendmail
> interface seems to have changed.
>
> In the previous version, if a message exceeded the configured
> message_size_limit, it would look like this:
>
> $ (printf "From: r...@csupomona.edu\nTo: hen...@csupomona.edu\nSubject: big
> email test\n\n"; yes test | head -c 10000000) | /usr/sbin/sendmail -t
> postdrop: warning: uid=1005: File too large
> sendmail: fatal: henson(1005): message file too big
>
> With the new version, it now emits:
>
> $ (printf "From: r...@csupomona.edu\nTo: hen...@csupomona.edu\nSubject: big
> email test\n\n"; yes test | head -c 10000000) | /usr/sbin/sendmail -t
> sendmail: fatal: henson(1005): internal protocol error
[FreeBSD 8.0]
% postconf mail_version
mail_version = 2.9-20110501
% limit filesize 1k
% sendmail wietse </etc/termcap
postdrop: warning: uid=1001: File too large
sendmail: fatal: wietse(1001): message file too big
[Ubuntu 10.04]
$ postconf mail_version
mail_version = 2.9-20110219
$ ulimit -f 1
$ man man|sendmail wietse
postdrop: warning: uid=1000: File too large
sendmail: fatal: wietse(1000): message file too big
Postfix hasn't changed, as far as I can tell. Perhaps something on
your system has changed.
I notice that your postdrop aborts before it logs the "File too
large" warning. Apparently the program is killed, and that explains
why sendmail logs the protocol error.
You may want to investigate with "strace -f" to see what kills off
the postdrop program. This requires root privileges (when postdrop
runs under strace, the postdrop setgid bit is ignored).
Wietse
