Hi, I have searched for a while but didn't find a solution yet. Maybe somebody out there has an idea whether the following is possible. I'd like OTRS to send all its e-mails with the following e-mail "From:" address support+TICKETNUMBER@mydomain.org where TICKETNUMBER should be the real ticketnumber. First incoming e-mails are dispatched by a regexp to a registration code, which is parsed from the body. Each registration code pattern corresponds with a special queue within OTRS. The inital e-mails is sent to support@mydomain.org. So there is a single point of contact. Customers don't have to remember a lot of different e-mails. They only have to know their support entitlement key. Once this ticket has been moved to its queue with the regexp filter, the answer from a support agent contains the ticketnumber within the subject and the mail address extension (like) above and is assigned to its queue. If the customer replies, the answer is correctly added to the ticket. Beside the Envelope-From the Return-Path is set to "support+TICKETNUMBER@mydomain.org", too and all not deliverable e-mails are bounced back to the corresponding ticket and not to a RAW queue (or something like this). So my question: Is it possible to set such kind of Envelope-From and dispatch or filter by the address extension in case the subject doesn't contain a valid ticketnumber? Any help appreciated :-) Cheers, Thomas