messages backing up - help

[Gareth]

And also are you running a local caching nameserver and not just pointing
the DNS to a different box.

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info
> [mailto:mailscanner-bounces at lists.mailscanner.info]On Behalf Of Mike
> Kercher
> Sent: 26 September 2007 18:32
> To: MailScanner discussion
> Subject: RE: messages backing up - help
>
>
> Is your DNS functioning?
>
> ________________________________
>
> From: mailscanner-bounces at lists.mailscanner.info on behalf of Chuck Rock
> Sent: Wed 9/26/2007 12:23 PM
> To: 'MailScanner discussion'
> Subject: messages backing up - help
>
>
>
> I am running FreeBSD 6.2 with MailScanner 4.61.7 and ClamAV 0.91.2 on a
> Dual
> Xeon 3.0GHz with 2 Gig RAM server.
>
> This box is just a pre-filter to do AV scan and the basic RBL and
> phishing
> scan. No spamassasin filtering on this server.
>
> I have been messing with the Max Children, Max Unscanned Messages Per
> Scan
> and Max Unsafe Messages Per Scan to find the magic numbers to get mail
> to
> prcess through this server smoothly.
>
> Max Children = 30
> Max Unscanned Messages Per Scan = 40
> Max Unsafe Messages Per Scan = 40
> Max Normal Queue Size = 5
>
> Current queue has 5000 messages waiting to be scanned.
> ----------------------------
> smtp1(1600):[/usr/local/etc/MailScanner]-#ps auxww | grep MailS | wc -l
>       17
> smtp1(1601):[/usr/local/etc/MailScanner]-#w
> 12:18PM  up 30 days,  2:38, 2 users, load averages: 1.47, 1.35, 1.37
>
> Sep 26 12:18:25 smtp1 MailScanner[83495]: Batch (40 messages) processed
> in
> 52.51 seconds
> ---------------------------
> smtp1(1613):[/usr/local/etc/MailScanner]-#ps auxww | grep MailS | wc -l
>       32
> smtp1(1614):[/usr/local/etc/MailScanner]-#w
> 12:20PM  up 30 days,  2:40, 2 users, load averages: 0.53, 1.10, 1.27
>
> Sep 26 12:20:40 smtp1 MailScanner[83502]: Batch (40 messages) processed
> in
> 182.66 seconds
>
> I can't find it.
>
> I grep the mail logs for the scan seconds and I find this.
>
> Sep 26 12:00:49 smtp1 MailScanner[78986]: Batch (40 messages) processed
> in
> 221.82 seconds
> Sep 26 12:01:07 smtp1 MailScanner[78940]: Batch (40 messages) processed
> in
> 239.80 seconds
> Sep 26 12:01:09 smtp1 MailScanner[79037]: Batch (40 messages) processed
> in
> 237.63 seconds
>
> Then:
>
> Sep 26 12:08:46 smtp1 MailScanner[79484]: Batch (40 messages) processed
> in
> 667.70 seconds
> Sep 26 12:08:53 smtp1 MailScanner[79207]: Batch (40 messages) processed
> in
> 691.09 seconds
> Sep 26 12:08:56 smtp1 MailScanner[79329]: Batch (40 messages) processed
> in
> 678.39 seconds
>
> And this time will continue to climb.
>
> Earlier it was:
> Sep 26 11:52:53 smtp1 MailScanner[64885]: Batch (40 messages) processed
> in
> 1272.42 seconds
> Sep 26 11:52:54 smtp1 MailScanner[65051]: Batch (40 messages) processed
> in
> 1291.63 seconds
> Sep 26 11:53:36 smtp1 MailScanner[66205]: Batch (40 messages) processed
> in
> 1186.13 seconds
>
> I restarted MailScanner and it goes back down for a short time.
>
> I have another server similar specs, FreeBSD 6.1, 4 Gig RAM, Dual Xeon
> 2.8GHz same MailScanner and Clam version. It's time also climbs, but
> takes a
> long time and the /var/spool/mqueue.in directory doesn't fill up with
> messages waiting to scan. This server can handle about twice as much
> throughput as the other. I also have the MailScanner.conf settings as
> above
> set higher. This one has 20 children with 80 messages per scan. The time
> rarely gets above 300 seconds in the mail logs.
>
> How can I troubleshoot this? Obviously it's not going to be fixed by
> tweaking those MailScanner settings above. I just don't have any idea
> why
> the scan times creep up like that.
>
> Any ideas?
>
> Thanks,
> Chuck
>
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