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Re: [Fwd: Postfix SMTP server: errors from unknown[63.64.27.245]]

From: Philip Reynolds (philip.reynoldsgmail.com)
Date: Fri Jul 02 2004 - 07:35:19 CDT

On Fri, 02 Jul 2004 07:44:04 -0400, Tom Allison <tallisontacocat.net> wrote:
> tallisonisengard:~$ dig -t mx hlgllc.com +short
> 20 mail.microman.net.
> 10 mail.hlgllc.com.
>
> tallisonisengard:~$ dig -t a hlgllc.com +short
> 63.64.27.245
> tallisonisengard:~$
>
> tallisonisengard:~$ dig -x 63.64.27.245 +short
> 245.240.27.64.63.in-addr.arpa.
> host245.hlgllc.com.
> tallisonisengard:~$
>
> But it appears that doing a lookup against this one (host245.hlgllc.com)
> does seem to fail. What I'm surprised at is the report that it cannot
> find a hostname for 63.64.27.245.

I would presume forward and reverse DNS must match.

Phil.