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Re: slight update to draft-macdonald-antispam-registry

2011-05-06 15:29:48

At 17:06 05-05-2011, Hector Santos wrote:
So you can see there are many using the Harris document. But you see both 450 and 451 with the 4.7.1 which is probably reflective of people, including myself, wondering if 450 was better based on what RFC2821 had for example 45z text:

  450  Requested mail action not taken: mailbox unavailable
  451  Requested action aborted: error in processing
  451  Requested action aborted: local error in processing
  452  Requested action not taken: insufficient system storage

I sent a comment to one implementer a few years about suggested switching to 450 as the code can be used to signify that it is a temporarily blocked for policy reasons. I know another implementation that uses "450". Refer to Section 4.2.2 of RFC 5321 for further information.