On Mon, Feb 25, 2013 at 6:06 PM, aurfalien <aurfalien at gmail.com> wrote: > Hi, > > Has any one had problems with mail clients were your DNS is like this; > > doman.com MX 50 mail.domain.com > domain.com MX 100 mail2.domain.com > > domain.com CNAME www.domain.com > Hello, You can't mix CNAMEs with other record types. The whole domain name can't be defined as a CNAME even if you don't add any A/MX records to it because it *must* have NS records. With BIND you can't even load a zone file defined like you suggested. named-checkzone complains: dns_master_load: domain.com.zone:14: domain.com: CNAME and other data zone domain.com/IN: loading from master file domain.com.zone failed: CNAME and other data zone domain.com/IN: not loaded due to errors. Interesting read: http://tools.ietf.org/rfc/rfc1912.txt pages 5/6 for CNAMEs. Usually you should use something like: domain.com IN NS dns.server.com. domain.com IN NS other.dns.com. domain.com IN A x.x.x.x www.domain.com IN CNAME domain.com. domain.com IN MX 5 etc AFAIK, SSL certs for www.domain are also valid for domain by default so that shouldn't be a problem.