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Re: reject_unknown_reverse_client_hostname rejects even if PTR RR is found

From: Wietse Venema (wietseporcupine.org)
Date: Sun Jul 12 2009 - 07:15:11 CDT

Keld Jørn Simonsen:
> Hi
>
> More fooling around with postfix,
>
> Using in main.cf
>
> smtpd_sender_restrictions = reject_unknown_reverse_client_hostname
>
> did not do what I expected:
>
> from the /var/log/mail/info file:
>
> Jul 12 09:12:48 rap postfix/smtpd[6597]: NOQUEUE: reject: RCPT from unknown[92.45.179.70]: 450 4.7.1 Client host rejected: cannot find your reverse hostname , [92.45.179.70]; from=<eononagenarianajsquare.com> to=<keldrap.rap.dk> proto=ESMTP helo=<asy70.asy179.tellcom.com.tr>

Surely, your assumption that all network paths are working
all the time must be valid, and Postfix must be mistaken.

        Wietse