Tom <tom@???> wrote:
> > SUMMARY: if you cannot seem to hide the hostname of your mail exchanger on
> > outgoing email, it may be because you have an MX record that points to a
> > CNAME instead of an A record.
>
> It isn't a really good idea to point MX to CNAMEs anyhow, even though
> aol.com does it. Some version of named complain profusely when resolving
> such things (use the supplied logging options).
Some people say it's ok, some don't.
> In general, think twice before using a CNAME for anything, as they get
> used really incorrectly sometimes, causing really big problems.
> Just use additional A records instead.
AOL have some info on why they've gone the route they have (sec 3):
<URL:
http://www.idot.aol.com/aol-mail/>
-Paul-
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