I have a problem with OTRS Notifications in a 2.4.2 installation (on a JumpBox server). This was upgraded from 2.3.1 this week.

When OTRS sends out responses to tickets, it works fine.

When OTRS sends out a notification (ie. Ticket Moved or New Ticket)  I observe the log (below) in the /var/log/mail.log file on the OTRS server. Note this text: from=<>. This is the problem - there is no FROM address, so the message is denied by my mail server's Backscatter Protection. How can I fix this? (note: ip addresses, server names and email addresses in log changed to protect the innocent)

Aug 20 13:19:24 otrs postfix/pickup[25189]: 21602CC72: uid=33 from=<>
Aug 20 13:19:24 otrs postfix/cleanup[25252]: 21602CC72: message-id=<1250799564.303021.450042732@myotrs.example.com>
Aug 20 13:19:24 otrs postfix/qmgr[4322]: 21602CC72: from=<>, size=3118, nrcpt=1 (queue active)
Aug 20 13:19:24 otrs postfix/smtp[25254]: 21602CC72: to=<auser@example.com>, relay=mail.example.com[209.209.209.209]:25, delay=0.14, delays=0.06/0/0.07/0.01, dsn=5.0.0, status=bounced (host mail.example.com[209.209.209.209] said: 550 Backscatter Protection detected an invalid or expired email address (in reply to RCPT TO command))
Aug 20 13:19:24 otrs postfix/qmgr[4322]: 21602CC72: removed

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Brian Lang - IT Department
Sovereign Management Group Inc. proudly serving
Pacific Group of Companies / Pacific Customs Brokers / Pacific Overseas Forwarding / The Derby Bar and Grill
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