Hi, for postfix log file /var/log/maillog, we notice that following line
1198B1E111: to=<u...@example.com>, relay=mail.example.com[XXX.XXX.XXX.XXX]:25, delay=20, delays=4.3/0.01/1.8/14, dsn=2.6.0, status=sent (250 2.6.0 Queued mail for delivery) The DSN is 2.6.0 INSTEAD of 2.0.0, is DSN is 2.6.0 is considered successful delivery? because according to the rfc3463 rfc3463: 2.XXX.XXX Success Success specifies that the DSN is reporting a positive delivery action. Detail sub-codes may provide notification of transformations required for delivery. X.6.0 Other or undefined media error Something about the content of a message caused it to be considered undeliverable and the problem cannot be well expressed with any of the other provided detail codes. So this means that 2.XXX.XXX is considered delivered without problems.. but in the same RFC is says that 2.6.0 means undelivered error... So i am confused if DSN=2.6.0 means that the email is accepted without problems? and why the receipt mail server is giving 2.6.0INSTEAD of 2.0.0 ?? why receipt server would give DSN2.6.0 ? I appreciate your feedback. Thanks Michael Peter