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? Thank you in advance. Regards Oliver -- Oliver Sandmann
