anant--- via Postfix-users:
Content-Description: Plaintext Message
> Hello,
>
> For a domain, we are finding in logs that, for most of the mails,
> mails are getting delivered to a server of remote domain having lower
> priority MX record.? For some mails, the mail is getting delivered to
> higher priority MX record server even though lower prioirity MX recod
> is reachable (we assume).? How do I debug to prove that, at that point
> of delivery, lower priority MX record server is not reachable or
> unable to deliver to lower priority MX record server?
The Postfix SMTP client logs all connection attempts, starting with
the most preferred MX hosts(s), until it reaches a remote SMTP
server that accepts or rejects the recipient and message content.
Wietse
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