Hi, > Find out why the host rejected the mail. I assume your mails are not > spam and they dont have a virus ( Email virus is almost a non-issue now > a days ) Are all the forwarded mails getting rejected , or only a few Well, i assume that those messages that get rejected (like 1 out of 10) really contain spam or viruses since our frontend mailserver does only some very brief spam checking and no virus checking due to load restrictions. Usually we do those checks on our backend servers which are configured to accept all mail.
> I suspect the recipient server is doing an SPF check. So you wont be > able to forward unless you change the envelope. The envelope is changed in our case as the destination address gets rewritten. Thanks for all your comments. I see now that we need to rework our forwarding policy. I think the best solution will be to first relay those mails to one of our backend servers, check them toroughly and only then forward them externally. cheers, Michael
