I'd thought you could only have one PTR for any given IP, and that while long ago you could have two A records, that was no longer acceptable and it was recommended to have a single A record and a CNAME (as you said).
This differs from having multiple IP addresses defined by more than one A record for a single hostname, that provides (or used to) a round-robin lookup. CNAME and PTR are on opposite sides of the fence. On Mon, Jan 06, 2014 at 03:22:29PM -0700, Charles Curley wrote: > On Mon, 6 Jan 2014 21:52:53 +0100 > Heiko Schlittermann <[email protected]> wrote: > > > ssl.schlittermann.de. 3600 IN A 212.80.235.130 > > pu.schlittermann.de. 3600 IN A 212.80.235.130 > > > > > > I think, nothing is wrong with having two PTR records. Even I know > > that ancient software used to have problems with this setup. > > > > Is there any interest to fix it? Or am I wrong completly? > > Try setting one up as the PTR, the other as an alias. > > -- > > The right of the people to be secure in their persons, houses, papers, > and effects, against unreasonable searches and seizures, shall not be > violated, and no Warrants shall issue, but upon probable cause, > supported by Oath or affirmation, and particularly describing the > place to be searched, and the persons or things to be seized. > -- U.S. Const. Amendment IV > > Key fingerprint = CE5C 6645 A45A 64E4 94C0 809C FFF6 4C48 4ECD DFDB --- Brian R Cuttler [email protected] Computer Systems Support (v) 518 486-1697 Wadsworth Center (f) 518 473-6384 NYS Department of Health Help Desk 518 473-0773
