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.
Regards,
-sm