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Re: Postfix Opt Out Bounces

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  • Wietse Venema
    ... Postfix sends a bounce message when a message expires in the queue. That bounce message is in standardized form, as described in RFC 3462. See for example,
    Message 1 of 5 , Jul 5, 2011
      John Clark:
      > I've been tasked with catching several bounce-back conditions (no longer
      > subscriber, connection refused, host not found, email address invalid, etc)
      > and adding the offending email address from our email server's messaging
      > list to prevent poisoning our mailserver's IP per several ISPs rules.
      >
      > Messages in my deferral queue are set to be removed after 5 days and I have
      > been instructed to catch the above stated conditions after 3 days to
      > auto-opt-out.
      >
      > I have a kludgy method for doing this but I don't believe it's an ideal
      > solution. Is there anything built in to Postfix to automate this process
      > better?

      Postfix sends a bounce message when a message expires in the queue.
      That bounce message is in standardized form, as described in RFC 3462.

      See for example, http://tools.ietf.org/html/rfc3462

      > Currently I am iterating through messages from `postqueue -p` with grep and
      > awk to parse out emails that match the conditions specified and log the
      > timestamp and the offending email address. I am then looping though the
      > generated hashmap to run a SQL insert on email addresses that have been in
      > the queue for more than 3 days.

      This is too much work. Parse the RFC 3462 message instead. It is
      meant to be machine-readble.

      Wietse
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