# [EMAIL PROTECTED] / 2002-12-28 19:15:49 +0100:
> Today Harry Tabak wrote:
> > Mail sent from my main server, gatehouse.quadtelecom.com (220.127.116.11)
> > gets rejected.
> > _450_Client_host_rejected:_cannot_find_your_hostname,_[18.104.22.168]
> If 450 is some error code, then it's only a _temporary_ error/failure
> (RFC 1893). Maybe the DNS servers using the old (cached) data.
ISTR Postfix replies with 450 to (almost) all errors by default.
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