Re: Usage mistake with dnswl.org

[Alessandro Vesely <vesely@xxxxxxx>]

On Tue 20/Dec/2022 02:36:44 +0100 Sydney Meyer wrote:
> The correct approach here were to create a single dnswl-id and add my 3 domains 
> and the two ip-addresses of the smtp-relays to the _one_ dnswl-id. Is that 
> correct?


Why do you want to add more domains?  I also host some other domains on my mail server.  That means that some.other.domain MX points to my server.  Other mail sites perform a complete masquerade for hosted domain, setting, e.g.,

some.other.domain IN MX mail.some.other.domain

However, the IP address of the MX usually has just one PTR[*].  So, it is convenient to keep a single domain name for the MX of various domains.  That way, not only you save IPs, but you avoid spreading IP reputation across multiple names/IPs.  If you have a low footprint, that is.

The MX domain name does not appear anywhere in email messages, except for Received: lines which no human cares about.

YMMV

P.S.:
you appear in a couple of BLs, according to Valli[†].  I don't know if that or your edits troubled dnswl listing.  I see your server on my dnswl cache, but not online.

Best
Ale
--

[*] https://serverfault.com/questions/618700/why-multiple-ptr-records-in-dns-is-not-recommended
[†] https://multirbl.valli.org/lookup/3.120.104.232.html