Jeffrey wrote:
> ...
> On another note the KB does not list 521 as one of the SMTP codes.
> ...
> 05:29 08:52 SMTP-(00000640) 521 lande02.landam.com access denied
According to RFC 2821:
5yz Permanent Negative Completion reply
The command was not accepted and the requested action did not
occur. The SMTP client is discouraged from repeating the exact
request (in the same sequence).
x2z Connections: These are replies referring to the transmission
channel.
The third digit gives a finer gradation of meaning in each category
specified by the second digit.
According to RFC 1893:
5.X.X Permanent Failure
A permanent failure is one which is not likely to be resolved by
resending the message in the current form. Some change to the
message or the destination must be made for successful delivery.
X.2.X Mailbox Status
Mailbox status indicates that something having to do with the
mailbox has cause this DSN. Mailbox issues are assumed to be
under the general control of the recipient.
X.2.1 Mailbox disabled, not accepting messages
The mailbox exists, but is not accepting messages. This may
be a permanent error if the mailbox will never be re-enabled
or a transient error if the mailbox is only temporarily
disabled.
--
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Rod Dorman late for the pebbles to vote." � Ambassador Kosh
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