Re: CNAME related queries...

>I am planning to setup a CNAME like :
>
>aaa.mydomain.com CNAME aaa.myotherdomain.com 
>
>1. aaa.myotherdomain.com has mx and txt records for spf. I am assuming
>that these mx and txt records will also work for aaa.mydomain.com . Is
>this correct? I could not find anything against this kind of setup in my
>search.

That's fine.  You're basically grafting the DNS subtree at
aaa.myotherdomain.com onto the tree at aaa.mydomain.com.

>2. I also want to add :
>
>bbb.aaa.mydomain.com CNAME bbb.myotherdomain.com 
>
>Will this be a violation of the rule against co-existance of CNAME with
>other records? Asking because aaa.mydomain.com is already a CNAME
>record.

You'll be sorry if you do that.  If that's really what you want,
you're better off writing a hack to fetch and mirror the desired
myotherdomain records in your mydomain zone.

R's,
John