> But there is no down side to a CNAME as long as you remember > that it really is an alias for the target name and thus inherits > any other data (like MX records) associated with it. The downsides to CNAMEs is that they increase look-up times - instead of getting an IP, you get a hostname which you have to look-up - again (ie. basically if your unlucky it's double the hostname -> IP/MX/whatever lookup time). ie. back to square one. Furthermore anything which is a CNAME point to a CNAME is dangerous - and those have a tendency to automagically crop up. Depending on the DNS library/cache etc you are using already 3 CNAME's in a row may result in failed lookups (others have higher limits - sometimes 4 sometimes as high as 10, sometimes none...) Cheers, MaZe.