problem with postfix rejecting email

[gareth at networksaremadeofstring.co.uk]

In your main.cf do you have either of the following enabled for
smtpd_client_restrictions:
reject_unknown_reverse_client_hostname
reject_unknown_client_hostname

> I'm having a problem with postfix, version 2.2.10-1.1.el4. Because of the
> screwy firewall configuration here, some lcoal email comes in to my email
> server with no reverse DNS entry. I had been rejecting those, but now that
> some of our own email is coming in that way, I need to turn it off. I
> thought I had been using reject_unknown_sender_domain to reject such
> email, but when I comment it out, I'm still rejecting email with no
> reverse DNS entry.
>
> My question: How do I turn this feature off?
>
> This is an example of a rejection in the log:
>
> Dec  4 10:49:47 aa postfix/smtpd[19280]: NOQUEUE: reject: RCPT from
> unknown[x.x.x.x]: 450 Client host rejected: cannot find your hostname,
> [x.x.x.x]; from=<emailaddy> to=<localuser> proto=ESMTP helo=<sender>
>
>
>
> --
> Bill Tangren
> U.S. Naval Observatory
>
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