> Date: Sat, 11 Apr 2009 14:42:31 +0700
> From: o...@cs.ait.ac.th
> To: rock_on_the_...@hotmail.com
> CC: freebsd-questions@freebsd.org
> Subject: Re: OT: Postfix rejects from Freebsd server
>
> > Apr 11 16:26:40 <hostname (internal)> postfix/smtp[1325]:
> > 488851744F: to=<freebsd-multimedia-requ...@freebsd.org>,
> > relay=mx1.freebsd.org[69.147.83.52]:25, delay=100211,
> > delays=100114/49/48/0.35, dsn=4.7.1, status=deferred (host
> > mx1.freebsd.org[69.147.83.52] said: 450 4.7.1 Client host rejected:
> > cannot find your hostname, [<my-IP>] (in reply to RCPT TO command))
>
> It seems like it is a DNS problem.
>
> Are you sure that:
>
> - your mail server gateway name resolves into your mail server gateway IP
>
> and
>
> - your mail server gateway IP reverse resolves to your mail server gateway
> name
>
> Both should be resolve properly.
>
> The check should be done outside of your own subnet, from an Internet
> Cafe (use Windows nslookup command, same syntax as nslookup on Unix)
> from home if you use a different ISP than for the machine that makes
> problem...
>
> You mention that you recently changed your IP, how recent is that
> recently? The old IP/name could be cached at FreeBSD.
>
I thought it sounded like dns too. But I was under the impression that only a
reverse lookup was used against the Server name sent by postfix. I have
specifically requested a ptr record in the arpa zone, and I can run a resolveip
successfully here.
Is my info wrong? Is the lookup done against more than just the Server name set
in main.cf?
Cheers
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