Dnia 6.05.2023 o godz. 23:36:52 Christian Seitz via mailop pisze: > >My concept of a "subdomain" is that it's just a (technically) > >regular domain, ie. regular DNS zone, which has a SOA record, NS > >records etc. It's > >juts colled a "subdomain" (which is quite arbitral) because it's one level > >lower than its parent domain that you (also quite arbitrarily) just call a > >"domain". > yes, this perhaps needs a clear definition. > > We have officially registered the domain "in-berlin.de". Every user > has a subdomain of this domain for email, web content, etc. My > testaccount is the subdomain "testchris.in-berlin.de". This > subdomain is not a different zone and therefore has not NS or SOA > records. As part of the domain "in-berlin.de" it's just a subdomain > with an MX record in order to receive emails. Most of our > participants also have A and AAAA records for their web content, but > that's not part of this Yahoo issue. > > "www.in-berlin.de" also is just a subdomain for web content and not > a completely separate zone with it's own NS and SOA records.
While A or AAAA record within a zone is something perfectly normal (like a file in a directory - I like to compare DNS to a file system, although I know it's not 100% technically correct), this is the first time I hear of an MX record with a name that corresponds to something within a zone, and not the name of the zone itself. I understand they may see this as unusual, but I don't understand why do they reject this? Do they also reject in case when there is an A/AAAA record with the same name in addition to MX? And what if it were only A/AAAA record defined for the address part on the right of @, and no MX at all? They should not object to mail coming from an address where the part after @ is an A/AAAA record, as this is perfectly normal, and even more basic feature than using MX records for mail. -- Regards, Jaroslaw Rafa r...@rafa.eu.org -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub." _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
