Re: Usage mistake with dnswl.org

[Sydney Meyer <sydney@xxxxxxxxxxxxxxx>]

On 12/20/22 11:50, Alessandro Vesely wrote:
> 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


That is the way it is currently setup, i.e. MX records of all hosted 
domains are pointing to smtp.sydneymeyer.net.

What is the meaning of adding (secondary) domains to a dnswl-id?

> P.S.:
> you appear in a couple of BLs, according to Valli[†].

Yes, thanks. I saw that. These are IP-addresses from AWS, will try to 
contact the appropriate BL's for removal.


> I don't know if that or your edits troubled dnswl listing.  I see your 
> server on my dnswl cache, but not online.


This is my own wrongdoing, i unclaimed to resources myself. Long story 
short: I obviously did not get how dnswl works.


best regards,

Sydney


> Best
> Ale