Hi, while trying to upgrade from Postfix 2.1.5 to a newer version, i experience problems with LMTP bounce handling.
old postfix version: postfix/lmtp[13549]: E379B1C07E: to=<u...@domain1.tld>, relay=lmtp.mx-domain.tld[XXX.XXX.XXX.XXX], delay=6, status=deferred (Authentication failed: SASL authentication failed; server lmtp.mx-domain.tld[XXX.XXX.XXX.XXX] said: 501 5.5.4 undefined error!) newer postfix version: postfix/lmtp[31973]: 26F2FC12D: to=<u...@domain1.tld>, relay=lmtp.mx-domain.tld[XXX.XXX.XXX.XXX]:2003, delay=5.7, delays=0.03/0.1/5.5/0, dsn=5.5.4, status=bounced (SASL authentication failed; server lmtp.mx-domain.tld[XXX.XXX.XXX.XXX] said: 501 5.5.4 undefined error!) The newer version is bouncing the mail instead of deferring it. I couldn't find any option to modify the handling of bounce/defer for lmtp. From what i can see from the config, it seems that the default configuration silently changed between the versions. Config parameters from the old config: MX1-OLD:~# postconf -n | grep lmtp lmtp_sasl_auth_enable = yes lmtp_sasl_password_maps = hash:/etc/postfix/lmtp_passwd lmtp_sasl_security_options = mailbox_transport = lmtp:lmtp.mx-domain.tld:2003 MX1-NEW:~# postconf -n | grep lmtp lmtp_sasl_auth_enable = yes lmtp_sasl_password_maps = hash:/etc/postfix/lmtp_passwd lmtp_sasl_security_options = mailbox_transport = lmtp:lmtp.mx-domain.tld:2003 If you guys have any hint how i could configure that MX1-NEW would handle mails exactly as MX-OLD, i would be very thankful. Greetings Martin
