"Alasdair Campbell" <news@alasdaircampbell.com> wrote in message
news:5qg2auFvqrjsU1@mid.individual.net...

> My domains all have CNAME aliases for 'www' pointing to my dynamic ip
> (dyndns hostname). I have no A records as I have no static IP to point
> them to.
>
> Will this cause problems in the long run with MTAs?

It shouldn't. But the A record is a red herring. An MTA will look for
an MX (mail exchanger) record first. It points to a hostname that will
accept mail to that domain, and while the host should know about mail
to your domain, its name may be in another domain.

A domain may have several MXs, with all the opportunities and problems
that implies.

Groetjes,
Maarten Wiltink