Thanks again for your help. I may have looked at this in a different way to
what you suggested, but I sent a couple of test messages from outside through
our ISP’s mail gateway. I checked on their server using a webmail interface,
and couldn’t see anything untoward in the message headers. We have a
multi-drop POP3 mailbox on the ISP, and our server uses a program called
Fetchmail to download all the messages, handing each downloaded message to a
program called Trestlemail which examines the header before dropping it off to
the correct recipient. As I said, I sent a couple of messages through, one
when the intended recipient had an Out Of Office message set, and one when the
Out Of Office message was off. I then looked at the complete messages in the
Cyrus store, and noticed that both messages had two lines which read:
Return-Path: r...@server.domain
I’m not sure if I’m barking up the wrong tree, but I then looked at the Postfix
master.cf file, and saw the following lines:
cyrus unix - n n - - pipe
flags=R user=cyrus argv=/usr/cyrus/bin/deliver -e -f $sender -m ${extension}
${user}
I read somewhere that the second line might need a ‘-r ${sender}’ parameter
added. Am I onto something here?----
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