problem with postfix rejecting email

[gareth at networksaremadeofstring.co.uk]

Hmm
What are your (if present) settings for the following:
smtpd_client_restrictions
smtpd_helo_restrictions
smtpd_sender_restrictions
smtpd_recipient_restrictions

>
>> 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
>
>
> No. The only other "reject_unknown" I have is:
>
> reject_unknown_recipient_domain under smtpd_recipient_restrictions.
>
>
>
>
>>
>>> 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
>>>
>>> --
>>> redhat-list mailing list
>>> unsubscribe mailto:redhat-list-request at redhat.com?subject=unsubscribe
>>> https://www.redhat.com/mailman/listinfo/redhat-list
>>>
>>>
>>
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>>
>
>
> --
> Bill Tangren
> U.S. Naval Observatory
>
> Ad eundum quo nemo ante iit
>
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> unsubscribe mailto:redhat-list-request at redhat.com?subject=unsubscribe
> https://www.redhat.com/mailman/listinfo/redhat-list
>
>