missing emails from time to time...

[slm17]

hi there

i' ve setted up a scalix 11 (community edition) server a few weeks ago and for testing if everything works well it's just running with a few users at the moment.
most of things worked perfect out of the box, but now i noticed strange behaviors with emails not delivered to the users.

i cannot find a clear pattern when emails got lost.
for testing i sent myself mails from a gmail and some other webmail accounts. three times the behavior was that the first message sent did not arrive. then a second one with exactly the same content worked. third etc as well.

it looks like the email messages come quite far - these are some lines from the maillog, one from a successfully delivered email, one from a failed one.

Code: Select all

///
LOST MAIL
///
[root@scalix ~]# tail -f -n 0 /var/log/maillog
Jul 17 10:52:41 scalix sendmail[32248]: l6H8qf8V032248: from=<user@gmail.com>, size=2095, class=0, nrcpts=1, msgid=<d43e84270707170151x606be9dcg6ec0021ed634ca78@mail.gmail.com>, bodytype=7BIT, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]
Jul 17 10:52:41 scalix spamd[21379]: spamd: connection from localhost.localdomain [127.0.0.1] at port 51160
Jul 17 10:52:41 scalix spamd[21379]: spamd: setuid to sa-milt succeeded
Jul 17 10:52:41 scalix spamd[21379]: spamd: processing message <d43e84270707170151x606be9dcg6ec0021ed634ca78@mail.gmail.com> for sa-milt:102
Jul 17 10:52:41 scalix spamd[21379]: spamd: clean message (0.0/5.0) for sa-milt:102 in 0.4 seconds, 2224 bytes.
Jul 17 10:52:41 scalix spamd[21379]: spamd: result: . 0 - scantime=0.4,size=2224,user=sa-milt,uid=102,required_score=5.0,rhost=localhost.localdomain,raddr=127.0.0.1,rport=51160,mid=<d43e84270707170151x606be9dcg6ec0021ed634ca78@mail.gmail.com>,autolearn=ham
Jul 17 10:52:41 scalix sendmail[32248]: l6H8qf8V032248: Milter change: header X-Spam-Status: from No, hits=1.40 required=5.00 tests=BAYES_05=-0.11,VOWEL_FROM_5=0.50,VOWEL_TOCC_5=0.50,NO_RDNS2=0.01,ONE_WORD_SUBJECT=0.50 to No, score=0.0 required=5.0 tests=none autolearn=ham\n\tversion=3.1.9
Jul 17 10:52:41 scalix sendmail[32248]: l6H8qf8V032248: Milter change: header X-Spam-Checker-Version: from SpamAssassin 3.1.8 (1.0) on ms1.externalmailserver.ch to SpamAssassin 3.1.9 (2007-02-13) on\n\tscalix.a57.domain.com
Jul 17 10:52:41 scalix spamd[21377]: prefork: child states: II
Jul 17 10:52:41 scalix sendmail[32256]: l6H8qf8V032248: to=<user@domain.com>, delay=00:00:00, xdelay=00:00:00, mailer=scalix_mime, pri=122095, relay=scalix, dsn=2.0.0, stat=Sent (Ok)




///
ARRIVED MAIL
///
[root@scalix ~]# tail -f -n 0 /var/log/maillog
Jul 17 10:54:42 scalix sendmail[32296]: l6H8sgYa032296: from=<user@gmail.com>, size=2094, class=0, nrcpts=1, msgid=<d43e84270707170154u65186605ua5eecb4eca5d5e2b@mail.gmail.com>, bodytype=7BIT, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]
Jul 17 10:54:42 scalix spamd[21379]: spamd: connection from localhost.localdomain [127.0.0.1] at port 51172
Jul 17 10:54:42 scalix spamd[21379]: spamd: setuid to sa-milt succeeded
Jul 17 10:54:42 scalix spamd[21379]: spamd: processing message <d43e84270707170154u65186605ua5eecb4eca5d5e2b@mail.gmail.com> for sa-milt:102
Jul 17 10:54:42 scalix spamd[21379]: spamd: clean message (0.0/5.0) for sa-milt:102 in 0.4 seconds, 2223 bytes.
Jul 17 10:54:42 scalix spamd[21379]: spamd: result: . 0 - scantime=0.4,size=2223,user=sa-milt,uid=102,required_score=5.0,rhost=localhost.localdomain,raddr=127.0.0.1,rport=51172,mid=<d43e84270707170154u65186605ua5eecb4eca5d5e2b@mail.gmail.com>,autolearn=ham
Jul 17 10:54:43 scalix sendmail[32296]: l6H8sgYa032296: Milter change: header X-Spam-Status: from No, hits=1.40 required=5.00 tests=BAYES_05=-0.11,VOWEL_FROM_5=0.50,VOWEL_TOCC_5=0.50,NO_RDNS2=0.01,ONE_WORD_SUBJECT=0.50 to No, score=0.0 required=5.0 tests=none autolearn=ham\n\tversion=3.1.9
Jul 17 10:54:43 scalix sendmail[32296]: l6H8sgYa032296: Milter change: header X-Spam-Checker-Version: from SpamAssassin 3.1.8 (1.0) on ms1.externalmailserver.ch to SpamAssassin 3.1.9 (2007-02-13) on\n\tscalix.a57.domain.com
Jul 17 10:54:43 scalix spamd[21377]: prefork: child states: II
Jul 17 10:54:43 scalix sendmail[32304]: l6H8sgYa032296: to=<user@domain.com>, delay=00:00:01, xdelay=00:00:00, mailer=scalix_mime, pri=122094, relay=scalix, dsn=2.0.0, stat=Sent (Ok)

does anyone hav an idea how to track this error down?
further info: mail is delivered using fetchmail, the installation is 1 to 1 from the manual, additionally i've setup clamav and spammassassin as described in the online how-to.

would really appreciate any help! thx jonas

[jaime.pinto]

Avoid relying on *gmail* to conduct any tests. We're been having problems with them for almost a month now, unlike any other ISP's. Usually getting the messages below on the sender side:

>This is an automatically generated Delivery Status Notification THIS IS
>A WARNING MESSAGE ONLY.
>YOU DO NOT NEED TO RESEND YOUR MESSAGE.
>Delivery to the following recipient has been delayed:
> user@domain.com
>Message will be retried for 2 more day(s) Technical details of
>temporary failure:
>TEMP_FAILURE: Unspecified Error (SENT_EHLO): Connection timed out

So far we could not find the reason for this, or how to fix.

[jaime.pinto]

This post actually gave me the motivation to seek resolution for this gmail problem. We eventually found out that the *smart defense* settings for smtp bad commands on our CheckPoint firewall was the offender. We had to disable it. In fact there were several instances in which we didn't even receive a notification that emails were being blocked.

[jaime.pinto]

More info on the subject for those of you with firewall:
http://groups.google.com/group/microsof ... n/browse...
http://chris-linfoot.net/d6plinks/CWLT-5WADL5
http://chris-linfoot.net/d6plinks/CWLT-6F6LHT

PS: what hapened to the *EDIT* post feature?