Using CNAME as MX is not recommended, someone might say forbidden. Check the following thread: https://lists.isc.org/pipermail/bind-users/2009-January/074828.html Technically I think there is no problem to do so, BIND even has an option to ignore such checks - check-mx-cname. BTW you did not specify what exactly the problem is, BIND did not load? Your queries fail? If yes how do they fail?
ena On Sun, Aug 7, 2011 at 4:05 PM, Scott Hughes <sonicscott9...@gmail.com>wrote: > All, > > I have Googled and searched the archives for two days and cannot find an > answer to this question... just more confusion! Please forgive me ahead of > time as I run two name servers for my mid-sized company and am by no means > an expert in using bind DNS. We have about eight domains but don't have a > lot of records for each zone. Here is my issue: > > We are moving to a two Exchange server / two data center model for > auto-failover reasons. Both data centers are in to different locations and > have multiple internet pipes and tier 1 providers coming into their data > centers. > > Here is what I'm trying to do: > > For example, our email domain name on the Exchange servers is: > mail.blahblah.us Our spam filtering device is: spam.blahblah.us and is > the MX record. In the blahblah.us zone file I have A records pointing to > both correctly. > > Our problem comes in on our other domains. I am trying to point > mail.company1.com to mail.blahblah.us and spam.company1.com to > spam.blahblah.us using CNAME records. I'm obviously doing this wrong or > trying to do something that can't or shouldn't be done. Like I said, I am > fairly new to bind9 but I'd sure rather use it than something link MS DNS > servers! > > What I am attempting to do is make it so that if an outside email server or > inside user goes to mail.company1.com or spam.company1.com they are > 'redirected' to the blahblah.us domain where our UCC cert covers both of > the Exchange servers. > > Please let me know if I've left anything out that would be helpful in > answering these questions. > > Thank you, > > Scott > > > _______________________________________________ > Please visit https://lists.isc.org/mailman/listinfo/bind-users to > unsubscribe from this list > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users >
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