Re[2]: Score based on MX of evelope / from domain?

Bill,

true at the edge in MTA is the best solution. But in SA has the 
advantage that the customers can WL if they expect a „very important“ 
mail from a sender with such a MX. In my experience this usually happens 
5min after adding the reject to MTA 😉

Have a good one

Tobi

------ Originalnachricht ------
Von "Bill Cole" <[email protected]>
An [email protected]
Datum 07.11.2025 14:34:02
Betreff Re: Score based on MX of evelope / from domain?

>On 2025-11-07 at 02:45:46 UTC-0500 (Fri, 7 Nov 2025 08:45:46 +0100)
>Benoît Panizzon <[email protected]>
>is rumored to have said:
>
>>Hi Jimmy
>>
>>>If you have the necessary access to add plugins, the solution involves
>>>creating a custom plugin specifically for this checking and filtering
>>>functionality.
>>
>>Oh wow, great! Thanks a lot for that template!
>
>A plugin is a fine solution for cases where the MX isn't a perfect spamsign, but it is also possible for small numbers of bad MXs to handle this absolutely outside of SA such as with check_sender_mx_access in postfix, or less elegantly through hosts file entries mapping the MX names to something your MTA will recognize as bogus.
>
>The advantage to doing that outside of SA is that it allows you to reject spam that you don't bother to actually receive.
>
>--  Bill Cole
>[email protected] or [email protected]
>  (AKA @[email protected] and many *@billmail.scconsult.com addresses)
>  Not Currently Available For Hire