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From: Duane Hill (no email)
Date: Thu Mar 01 2007 - 00:55:27 EST
On Thu, 1 Mar 2007, Victor Duchovni wrote:
> On Thu, Mar 01, 2007 at 04:30:03AM +0000, Duane Hill wrote:
>
>> On Wed, 28 Feb 2007, Adam C. Mathews wrote:
>>
>>> reject_unknown_reverse_client_hostname
>>>
>>> Am I understanding correctly that this looks for a reverse DNS entry for
>>> a connecting IP, and if no such record exists it denies the mail?
>>
>> Correct.
>>
>>> This does NOT check that the reverse matches the forward entry correct
>>> (i.e. it is a fairly conservative check)...
>>
>> No. However, it does enforce the fact there must be an A record for the
>> host name returned from looking up the IP address. If not, the message
>> will be rejected with a 450 code by default.
>
> No, it only checks that the reverse name exists, no forward lookup
> is made.
Oops! After rereading the doc, I realize this now. Sorry for misleading.
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