Hi all, checking the logs of a mailserver we found a bounce to an external sender with "routed sender", a sender with double @ like user@domain1@domain2 .
Postfix 2.10.3 is configured to deliver the mail to a local Cyrus with the deliver command and the problem is that postfix pipe process bounced cause to "data format error. Command output: root: Bad protocol". The problem is that cyrus is not expecting user@domain1@domain2 like senders but investigating further i founded rfc 2822. According to rfc2822 Appendix B: Routes in addresses not allowed Routes in return path not allowed I searched in the mans and documentation but i didn't find a solution; is it possible to deny routed senders like user@domain1@domain2? Is it right that user@domain1@domain2 is not syntactically correct and the correct syntax is "@ONEdomain,@TWOdoamin:JOE@THREEdomain" ? Thanks Marco
