[exim] Re: Looking for advice on Grey Listing vs outlook.com…

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Author: James
Date:  
To: exim-users
Subject: [exim] Re: Looking for advice on Grey Listing vs outlook.com's behaviour
On 22/08/2023 09:17, Mark Elkins via Exim-users wrote:

> I'm looking for advice on Grey Listing vs outlook.com's behaviour of
> retrying to send from multiple SMTP relays.

...
> 3 - White list all the Outlook.com SMTP Server addresses


In grey list defer I use:

    !dnslists = list.dnswl.org



Checking a single sample...

$ host 40.107.241.107
107.241.107.40.in-addr.arpa domain name pointer
mail-vi1eur02on2107.outbound.protection.outlook.com.

$ host 107.241.107.40.list.dnswl.org
107.241.107.40.list.dnswl.org has address 127.0.3.0

It is listed, that is all I require to skip grey listing.


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