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UTM 9.351-3 SMTP proxy stops delivering, exim-out not running

EWIT

Our Sophos UTM 220 is running SMTP anti-spam proxy, and has been running well for many months. After the recent firmware update to 9.351-3 the SMTP proxy frequently stops delivering mail.

Messages are logged as moving to the work queue, but exim-out never actually picks up the messages and spools them for delivery. To clear the stuck mail I have to stop SMTPD, clear the retry timeout database, and restart SMTPD.

We are only using this for inbound filtering, and it's delivering to our in-house SMTP server, nothing very complicated.

exim-out ends with a simple message:

2015:11:23-10:31:15 firewall exim-out[29473]: 2015-11-23 10:31:15 End queue run: pid=29473

But the "start queue run" message doesn't reappear until after I restart the SMTP service. Obviously I can't babysit this thing all day. Any ideas?

 



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  • 0
    www.sophos.com/.../120368.aspx provides the instructions I have to do every few hours to keep the mail flowing.
  • 0
    I've had support look into this THREE times already this month; most recent was today, while nearly 1,000 emails stacked up on the UTM over 2 hours. We checked every possible log file and no problems were apparent.

    After restarting smtpd, the messages moved into the spool and were delivered in minutes.

    I've enabled SMTP debug logging (not sure why support didn't recommend that...) and hope to catch the problem happening. Maybe I just need to schedule smtpd to restart every hour? Sad.

    Very, very disappointed with this. Maybe the UTM 220 can't handle the mail load of 50 employees?
  • 0
    hello EWIT,

    i had the same problem a few days ago too. also firmware 9.351-3 but on a sg310. the exim-out stopped suddenly delivering mails without a failure message. the emails were collected somewhere, i could see it counting but i couldnt see them in the smtp spool. restarting the smtp service didn't help. there was no failure message. my service partner also had no idea what had happened. caus i had some pressure from time, i completely restarted the utm and all mails were delivered correctly. since then, it didn't happen again *fingers crossed*. i've never had this problem before. so this may be a bug in version 9.35.1-3.

    have you tried a complete restart? maybe this will help you too.

    greetings,
    Sebastian
  • 0
    Well, this feature has once again completely failed, and embarrassed me in front of the COO and CEO. It caused some pretty significant delays of very business-critical work. That's what I get for expecting it to work again.

    I had turned off the AV scanning parts, thinking that was the problem. Apparently not.

    I'm turning off SMTP filtering on the UTM. It's a disaster, and support does nothing but look at log files and tell me to contact them again if it happens. Then they look at log files and don't have any ideas, and everything's working again after smtpd restart.
  • 0
    Hello EWIT,

    the new update, 9.353-4, seems to include a solution for ur/my problem:

    36221 After update to version 9.317/9.351 SMTP messages stop being processed (without any notifications/errors in log)

    can you confirm?

    greetings
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