1
I have a mail server postfix, and for an account i forward mails to gmail.
user1@domaine1.com => user@gmail.com
The forward works, but in gmail when I try to reply to forwarded mails I have a fail :
Delivery to the following recipient failed permanently:
guillaume@domaine.com
Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the relay smtp.domaine1.com by smtp.domaine1.com. [IP].
The error that the other server returned was: 535 5.7.8 Error: authentication failed: authentication failure (SMTP AUTH failed with the remote server)
why it try to send mails to smtp.domaine1.com for user guillaume@domaine.com
Sincerely
I found that the problems come from SASL Auth on my server : warning: SASL authentication failure: Password verification failed
But now I don't know with SASL works on my server for first instance, perhaps no for the second postfix instance. – Guillaume Chéramy – 2013-12-22T09:45:02.297