One of our clients owns the domain some-domain.org.
This domain is not maintained by us, and I am wondering if I am overlooking something: our client has a forwarder setup for this domain (IE. firstname.lastname@example.org forwards to email@example.com).
When I do an MX lookup on this domain I see the following:
;; QUESTION SECTION: ;some-domain.org. IN MX ;; ANSWER SECTION: some-domain.org. 9264 IN MX 50 mail.some-domain.org.
Which indicates there has been an MX-entry setup. However, this specific entry does not seem to resolve:
;; QUESTION SECTION: ;mail.some-domain.org. IN A ;; AUTHORITY SECTION: some-domain.org. 2359 IN SOA ns1.hans.hosteurope.de. hostmaster.some-domain.org. 2010062314 16384 2048 1048576 2560
But yet, the forwarder works.
Am I overlooking something? How can this forwarder work, even though this domain does not seem to have a valid MX entry?