oliver sandmann: > Hi > > I have the following setup: > > new postfixserver: sandmann.biz > legacy email system: kosmann.net (I am not root here.) > > one email each: oli...@sandmann.biz > oli...@kosmann.net > > normally every mail going to the old oli...@kosmann.net is > copy-forwarded to the new mail oli...@sandmann.biz. I keep a copy of > every mail locally at oli...@kosmann.net, just to be sure and not to > loose a single mail. > > Everything works fine! > > Except: > When I send mail from oli...@sandmann.biz to my old address > oli...@kosmann.net, it should be delivered there locally and this mail > should be forwarded to oli...@sandmann.biz and should then be delivered > locally here, too. > > Partial success: > The first local delivery takes place at oli...@kosmann.net > > But: > While trying to forward the mail to oli...@sandmann.biz it gets rejected > with the following error: > oli...@sandmann.biz > SMTP error from remote mail server after RCPT TO:<oli...@sandmann.biz>: > host mail.sandmann.biz [80.77.29.210]: 553 5.7.1 <oli...@sandmann.biz>: > Sender address rejected: not logged in > > > I think I understand the underlying problem. Such mails try to do > desired and valid roundtrip starting at oli...@sandmann.biz and ending > at oli...@sandmann.biz, too. It seems that the From-line stating > oli...@sandmann.biz as the original sender while the mail returns to > oli...@sandmann.biz triggers an authentication check but as this mail is > in the forwarding process from kosmann.net to sandmann.biz no user > authentication can take place. > > Does anybody have a clue, how to fix this problem? > TO REPORT A PROBLEM see http://www.postfix.org/DEBUG_README.html#mail
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