Hi,
I'm sending an email with a valid address to an invalid one (i.e. the
destination domain doesn't exist). The bounce message is rejected by
the valid sender's mail server because the sender address is empty.
The question is why the sender is empty and how can be this solved?
Example:
Sender: address@valid.domain
Recipient: address@invalid.domain
Log:
postfix/bounce[18367]: 4FvShX4dlszNkGd: sender non-delivery
notification: 4FvShn5kHhzNkbj
Log for 4FvShn5kHhzNkbj:
[...] 4FvShn5kHhzNkbj: to=<address@valid.domain>, relay=VALID.DEOMAIN,
delay=88, delays=0/88/0.08/0.01, dsn=4.7.1, status=deferred (host
VALID.DEOMAIN said:
453 4.7.1 <>: Sender address rejected: You are not authorized to send
as <> (in reply to RCPT TO command))
Top rows of the queue file:
*** ENVELOPE RECORDS /var/spool/postfix/deferred/C/4FvShn5kHhzNkbj ***
message_size: 2450 287 1
0 2450 0
message_arrival_time: Tue Jun 1 10:15:21 2021
create_time: Tue Jun 1 10:15:21 2021
named_attribute: log_message_origin=local
named_attribute: trace_flags=0
sender:
named_attribute: dsn_orig_rcpt=rfc822;address@valid.domain
original_recipient: address@valid.domain
recipient: address@valid.domain
*** MESSAGE CONTENTS /var/spool/postfix/deferred/C/4FvShn5kHhzNkbj ***
Received: by mymailserver (Postfix)
id 4FvShn5kHhzNkbj; Tue, 1 Jun 2021 10:15:21 +0000 (UTC)
Date: Tue, 1 Jun 2021 10:15:21 +0000 (UTC)
From: MAILER-DAEMON@mymailserver (Mail Delivery System)
Subject: Undelivered Mail Returned to Sender
To: address@valid.domain
Auto-Submitted: auto-replied
Thank you in advance,
Zsombor
