Re: exim HELO=fully qualified host name?
On 2004-02-06 17:31:21 -0500, David Clymer wrote:
> for instance, when communicating with a remote host, it would seem to me
> that the logical hostname to supply (as a self reference) would be a
> hostname which is resolvable via DNS rather than an /etc/hosts alias
> which is inaccessable to the remote host and can contain (and rightly
> so) a hostname resolving to 127.0.0.1.
Not necessarily. It depends on the type of communication. For the
HELO command, the FQDN doesn't have to be resolvable (and sometimes
it can't, e.g. if you are on a network with private IP addresses).
Also note that contrary to the FQDN, resolvable hostnames for a
machine are not necessarily unique, as a machine can have several
network interfaces.
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