Mail stuck in incoming queue of MailScanner

[Wolf]

Hi List.

I had a good running setup with UUCP-Postfix-MailScanner-Cyrus on
Debian unstable.
>From one day to the next the mails got stuck in the incoming queue of MS.

Incoming Work Dir = /var/spool/MailScanner/incoming

It started suddenly with this enty im the logs:
...
May 29 15:21:08 bio postfix: Process did not exit cleanly, returned
255 with signal 0

There isnt even a process named postfix! Postfixes processes got other
names like master...

I already searched for this error-message but didnt find a satisfying
answer. Any Ideas?

MS restartet right after the postfix-message:

May 29 15:21:08 bio MailScanner[8876]: MailScanner E-Mail Virus
Scanner version 4.46.2 starting...

And it checks the same 5 mails again.

May 29 15:21:08 bio MailScanner[8876]: MailScanner E-Mail Virus
Scanner version 4.46.2 starting...
May 29 15:21:10 bio MailScanner[8876]: Read 676 hostnames from the
phishing whitelist
May 29 15:21:11 bio MailScanner[8876]: Enabling SpamAssassin
auto-whitelist functionality...
May 29 15:21:12 bio MailScanner[8876]: Using locktype = flock
May 29 15:21:12 bio MailScanner[8876]: New Batch: Scanning 5 messages,
130613 bytes
May 29 15:21:12 bio MailScanner[8876]: MCP Checks completed at 130613
bytes per second
May 29 15:21:12 bio MailScanner[8876]: Spam Checks: Starting
May 29 15:21:14 bio MailScanner[8876]: Spam Checks completed at 65306
bytes per second
May 29 15:21:14 bio MailScanner[8876]: Virus and Content Scanning: Starting
....
May 29 15:21:14 bio MailScanner[8876]: Filename Checks: Allowing
144A676998.4C336 msg-8876-7.txt
May 29 15:21:14 bio MailScanner[8876]: Filename Checks: Allowing
144A676998.4C336 PM-DAS-UNGASS.pdf (no rule matched)
..
May 29 15:21:14 bio MailScanner[8876]: <A> tag found in message
CF3267699E.00C19 from laxxxxxxxn at laxxxxxxxxxxx.de
May 29 15:21:14 bio MailScanner[8876]: Virus Scanning completed at
130613 bytes per second
May 29 15:21:16 bio CRON[5953]: (pam_unix) session closed for user root
May 29 15:21:19 bio postfix: Process did not exit cleanly, returned
255 with signal 0

This will go ad infinitum. Incoming queue is filling up.

Workaround was to bypass MailScanner in main.cf (of Postfix)

So ist there a mail that MS cant scan and causes this error?
-- 
Wolf Hees
http://alphawolf.blogg.de