"Alexei Batyr'" <[email protected]> writes:

>>  * non resolvable HELO names are blocked
>
> I've successfully using such HELO check (by mean of localmailfilter
> mechanism and simple external program for DNS queries - helocheck)

Interesting.  I will definitely have a look at that.

"Joseph C. Lininger" <[email protected]> writes:

>> On a related note, is anybody doing conditional greylisting --
>> e.g., incoming messages are greylisted if they fail the HELO check,
>> or if they fail the SPF checks, or things along those lines?  Would
>> it be possible to set that sort of thing up without fully
>> re-implementing the checks themselves in the greylisting filter?
>
> You can use pythonfilter to do this. On our server, servers that
> pass one of several checks are not subject to greylisting. One of
> the checks we do is an spf check. If the server delivering the
> message passes an spf check, it is not subject to greylisting. Use
> the whitelist_spf filter in conjunction with the greylist filter.

This too.  Thanks for the tip.

-- 
Nathan Eady
Galion Public Library


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