I have an account on a host machine that receives email from a mailing list. That account then uses procmail to forward some messages to a different account on a different host machine.
:0 ! u...@example.com All fine for the most part. But infrequently someone posts a message to the mailing list with an invalid domain name in the From: field. This is accepted by the mailing list and delivered to the list members. From: Some User <user@invalid> This case is mailed but the From: line is changed to be the account user owner of the forwarding process. The result shows up in the final destination as having a From: line with the forwarding user instead of the original From: line. This is often a little shocking to see your own name as having sent the message. But obviously it is simply due to the way the message was forwarded. If instead of being forwarded it was delivered locally then no change to the From: line is observed. But upon re-mailing that line is changed. I have no control over the mailing list and, though unusual, there are going to be some messages come through with invalid From: lines. Is there a better way to forward these messages (such as some option to postfix for "| $SENDMAIL --option" or some such) so that the From: line is not validated and in the case of invalid addresses not replaced by Postfix? I have searched the documentation but haven't seen anything like an option or configuration to preserve the From: address but am hoping that I simply missed finding such a thing. Thanks, Bob
