Dragos Delcea:
> hello,
>
> does 447 reply code exists? and if it does what does it mean?
> the reply code above was given by an exchange server, I belive
> {Microsoft SMTPSVC(5.0.2195.5329)} to someone who was trying to send
> mail to one of our domains; my end is postfix 1.1.11 (debian woody).
>
> as far as I can see, the respective exchange server didn't even try to
> establish a connexion to postfix to deliver mail to that particular
> domain; however, it can send mail happily to other domain that is hosted
> on the same postfix. (postfix style virtual domains, not sendmail)
>
> the 447 code looks like a temporary failure, exchange tries to deliver
> the mail for a few days, and after that gives up, saying it could not
> deliver the message in the time limit specified (gives the 4.4.7 reply
> code).

4.4.7 is defined in RFC 1893 (Enhanced Mail System Status Codes).

       X.4.7 Delivery time expired

This is not to be confused with 447 which would be an SMTP code.

        Wietse

> I've been looking in rfc821, and found no mention of 447.
> I belive it's a misconfiguration on the exchange, or on the name servers
> on their side, because I have all (3) domains working for some time,
> without any problems.
>
> Any ideas appreciated,
>
> Dragos Delcea
>
>
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