I suspect a operator error that has now been fixed. If you put IP addresses in the MX records, instead of hostnames, the current $ORIGIN will be appended which is born out by looking at the address records for the mail exchangers.
Mark [drugs:~/cvs/bind9] marka% dig mx coop-uspto.gov ; <<>> DiG 9.6.0-APPLE-P2 <<>> mx coop-uspto.gov ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39502 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 3 ;; QUESTION SECTION: ;coop-uspto.gov. IN MX ;; ANSWER SECTION: coop-uspto.gov. 7157 IN MX 5 coop-mbxhc-0.coop-uspto.gov. coop-uspto.gov. 7157 IN MX 5 coop-mbxhc-1.coop-uspto.gov. ;; AUTHORITY SECTION: coop-uspto.gov. 2983 IN NS dr-coopdns-1.coop-uspto.gov. ;; ADDITIONAL SECTION: coop-mbxhc-0.coop-uspto.gov. 7187 IN A 151.207.128.22 coop-mbxhc-1.coop-uspto.gov. 7196 IN A 151.207.128.23 dr-coopdns-1.coop-uspto.gov. 2984 IN A 151.207.240.200 ;; Query time: 3 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Wed Jun 8 10:34:14 2011 ;; MSG SIZE rcvd: 165 [drugs:~/cvs/bind9] marka% In message <2aa71bedebcf80449e35b7b640700be4364424e...@email4.uspto.gov>, "Lear , Karen (Evolver)" writes: > Thanks. > > ________________________________________ > From: bind-users-bounces+karen.lear=uspto....@lists.isc.org [bind-users-bounc > es+karen.lear=uspto....@lists.isc.org] On Behalf Of Eivind Olsen [eivind@amin > or.no] > Sent: Tuesday, June 07, 2011 5:38 PM > To: bind-users@lists.isc.org > Subject: Re: MX record IP address instead of hostnames > > Karen Lear wrote: > > > Can anyone tell me why my MX record for the coop-uspto.gov domain are IP > > addresses instead of hostnames? > ... > > Non-authoritative answer: > > coop-uspto.gov mail exchanger = 5 151.207.128.23.coop-uspto.gov. > > coop-uspto.gov mail exchanger = 5 151.207.128.22.coop-uspto.gov. > > I can't, no. It looks fine enough when I check here (a bit odd to only > have a single nameserver, but that's beside the point). > > [eivind@vimes ~]$ dig +short mx coop-uspto.gov > 5 coop-mbxhc-1.coop-uspto.gov. > 5 coop-mbxhc-0.coop-uspto.gov. > [eivind@vimes ~]$ > > Regards > Eivind Olsen > > > _______________________________________________ > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users > _______________________________________________ > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users