[Mimedefang] milter timing out.

[-ray]

Having a weird milter timeout on my server as well.  Mail flows fine then 
for no apparent reason, the milters start timing out.  Sendmail reaches 
MaxDaemon (currently 250) and starts rejecting connections.  Even after 
that, mimedefang never seems to recover.  Restarting sendmail and 
mimedefang fixes it.  This has been happening once every day or two.

Right now i'm looking for ideas on where to troubleshoot next.  I tried 
upping MaxDaemon to 500 and 1000 but the problem still occurs.  I've 
increased milter timeouts to F=T, T=S:5m;R:5m;E:10m.   Trying to determine 
if this is a sendmail or a MD (or spamassassing or clamav) problem.

Is sendmail reaching MaxDaemon because the milters start backing up, or
vice versa?  I tried turning on mimedefang debugging, but the load was too
great and the system couldn't keep up.  Any other ideas?

ray



Jan 31 20:51:03 norm sm-mta[27815]: i112jv3O027815: Milter (mimedefang): 
timeout before data read
Jan 31 20:51:03 norm sm-mta[27815]: i112jv3O027815: Milter (mimedefang): 
to error state
Jan 31 20:51:03 norm sm-mta[27815]: i112jv3O027815: Milter: data, 
reject=451 4.7.1 Please try again later
Jan 31 20:51:03 norm sm-mta[27815]: i112jv3O027815: to=spamtest at selu.edu, 
delay=00:05:04, pri=30313, stat=Please try again later
Jan 31 20:51:04 norm sm-mta[28251]: i112k43N028251: Milter (mimedefang): 
timeout before data read
Jan 31 20:51:04 norm sm-mta[28251]: i112k43N028251: Milter (mimedefang): 
to error state
Jan 31 20:51:04 norm sm-mta[28251]: i112k43N028251: Milter (mimedefang): 
init failed to open
Jan 31 20:51:04 norm sm-mta[28251]: i112k43N028251: Milter (mimedefang): 
to error state
Jan 31 20:51:04 norm sm-mta[28251]: i112k43N028251: Milter: initialization 
failed, temp failing commands
Jan 31 20:51:04 norm sm-mta[28251]: i112k43N028251: 
12-215-185-211.client.mchsi.com [12.215.185.211] did not issue 
MAIL/EXPN/VRFY/ETRN during connection to MTA
Jan 31 20:51:05 norm sm-mta[3100]: rejecting connections on daemon MTA: 
250 children, max 250
Jan 31 20:51:05 norm sendmail[12687]: i0VBUTU7019879: 
to=<MasturbationTelevision at polarwax.com>, delay=15:20:36, xdelay=00:00:22, 
mailer=esmtp, pri=3725131, relay=mail.polarwax.com. [211.167.73.20], 
dsn=4.0.0, stat=Deferred: Connection refused by mail.polarwax.com.
Jan 31 20:51:05 norm sm-mta[28253]: i112k53N028253: Milter (mimedefang): 
timeout before data read
Jan 31 20:51:05 norm sm-mta[28253]: i112k53N028253: Milter (mimedefang): 
to error state
Jan 31 20:51:05 norm sm-mta[28253]: i112k53N028253: Milter (mimedefang): 
init failed to open
Jan 31 20:51:05 norm sm-mta[28253]: i112k53N028253: Milter (mimedefang): 
to error state
Jan 31 20:51:05 norm sm-mta[28253]: i112k53N028253: Milter: initialization 
failed, temp failing commands
Jan 31 20:51:05 norm sm-mta[28253]: i112k53N028253: mta13.classmates.com 
[65.243.133.33] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
Jan 31 20:51:06 norm sm-mta[28254]: i112k63N028254: Milter (mimedefang): 
timeout before data read
Jan 31 20:51:06 norm sm-mta[28254]: i112k63N028254: Milter (mimedefang): 
to error state
Jan 31 20:51:06 norm sm-mta[28254]: i112k63N028254: Milter (mimedefang): 
init failed to open
Jan 31 20:51:06 norm sm-mta[28254]: i112k63N028254: Milter (mimedefang): 
to error state
Jan 31 20:51:06 norm sm-mta[28254]: i112k63N028254: Milter: initialization 
failed, temp failing commands
Jan 31 20:51:06 norm sm-mta[28254]: i112k63N028254: 08.opn08.com 
[69.6.27.127] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA