North American Network Operators Group

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incorrect spam setups cause spool messes on forwarders

  • From: Randy Bush
  • Date: Mon Dec 01 13:13:20 2003

is the following a general problem, or just one i am seeing?

note 2821 says

      450 Requested mail action not taken: mailbox unavailable
         (e.g., mailbox busy)
      550 Requested action not taken: mailbox unavailable
         (e.g., mailbox not found, no access, or command rejected
         for policy reasons)


From: Randy Bush <[email protected]>
To: [email protected]
Subject: broken mail server
Date: Mon, 1 Dec 2003 10:02:34 -0800

you have a .forward on pointing to [email protected]
like all mail accounts these days, you get spam.  but the forward,
as opposed to rejecting it with a 5xx is deferring with a 450 (see
below), which is not proper.  this means that the spam stays in the
queue here, which is just not reasonable.

please do one of the following:
  o see that the verison server is fixed (good luck),
  o set your forward to a properly working server, or
  o tell me so i can kill your mail account here.


2003-12-01 10:09:05 1APbBa-000Ork-DY == [email protected] <[email protected]> R=lookuphost T=remote_smtp defer (0): SMTP error from remote mailer after MAIL FROM:<[email protected]> SIZE=5365: host []: 450 Requested mail action not taken-Try