Mail forwarding to gmail inconsistent

Hi,

I have quite a strange problem on my hands. Several mail addresses are setup to forward to [email protected] (and keep a copy).

Somehow some messages are being forwarded but the majority is not. All mail does arrive in the mailbox, so I think the problem should reside on our server.

Any pointers at all on how to trace the problem?

Thanks in advance

 

I can't find any errors in /var/log/mail.err relating to procmail.

Is there a specific procmail recipe for forwards?

I see the following files in /var/www/<...>/user/<username> (ls -al)
.antivirus.rc
.autoresponder.rc
.html-trap.rc
.local-rules.rc
.mailsize.rc
.quota.rc
.spamassassin.rc
.user_prefs
.vacation.msg

 

ISPConfig
Version: 2.2.7
(c) ISPConfig 2007

 

The forwarding is done by the .forward file in the user's homedir, so procmail isn't even called.

What's in your mail log when you send a mail to a user that has his mails forwarded to Gmail?
Also, please check if your server got blacklisted: http://www.mxtoolbox.com/blacklists.aspx

 

contents of the .forward
"|/usr/bin/procmail -f-", [email protected]

settings in the webpanel
keep copy
forward to [email protected]

Mail log contents
Jan 5 10:33:55 ds2 postfix/local[22703]: D1CCE27583EC: to=<[email protected]>, orig_to=<[email protected]>, relay=local, delay=5, status=sent (delivered to command: /usr/bin/procmail -f-)
Jan 5 10:33:55 ds2 postfix/cleanup[22702]: 73DB227583ED: message-id=<003a01c730ac$8f097ba0$6801a8c0@LaptopMartin>
Jan 5 10:33:55 ds2 postfix/qmgr[10026]: 73DB227583ED: from=<[email protected]>, size=6746, nrcpt=1 (queue active)
Jan 5 10:33:55 ds2 postfix/local[22703]: D1CCE27583EC: to=<[email protected]>, orig_to=<[email protected]>, relay=local, delay=5, status=sent (forwarded as 73DB227583ED)
Jan 5 10:33:55 ds2 postfix/qmgr[10026]: D1CCE27583EC: removed
Jan 5 10:33:55 ds2 postfix/smtp[22673]: 73DB227583ED: to=<[email protected]>, orig_to=<[email protected]>, relay=gmail-smtp-in.l.google.com[66.249.93.114], delay=0, status=sent (250 2.0.0 OK 1167989623 39si29433033ugb)
Jan 5 10:33:55 ds2 postfix/qmgr[10026]: 73DB227583ED: removed

 

These settings are fine.

I don't see a problem in this log excerpt.

 

I couldn't find anything either, it seems though that the problems are disappearing and that more and more (old) messages are getting through. Maybe it's a gmail filter that's in the way.