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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