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: [email protected] > [email protected] > > normally every mail going to the old [email protected] is > copy-forwarded to the new mail [email protected]. I keep a copy of > every mail locally at [email protected], just to be sure and not to > loose a single mail. > > Everything works fine! > > Except: > When I send mail from [email protected] to my old address > [email protected], it should be delivered there locally and this mail > should be forwarded to [email protected] and should then be delivered > locally here, too. > > Partial success: > The first local delivery takes place at [email protected] > > But: > While trying to forward the mail to [email protected] it gets rejected > with the following error: > [email protected] > SMTP error from remote mail server after RCPT TO:<[email protected]>: > host mail.sandmann.biz [80.77.29.210]: 553 5.7.1 <[email protected]>: > Sender address rejected: not logged in > > > I think I understand the underlying problem. Such mails try to do > desired and valid roundtrip starting at [email protected] and ending > at [email protected], too. It seems that the From-line stating > [email protected] as the original sender while the mail returns to > [email protected] 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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