On 8/22/2011 9:26 AM, Kai Schaetzl wrote:
> Actually, the "main suspect" is the program or person that is sending out
> mail with an unqualified sender, e.g. just "user". Change it to a
> qualified sender (e.g. with a resolvable FQDN).
>
With sendmail you can set 'MASQUERADE_AS' in sendmail.mc to the FQDN
that you would like to have added to unqualified senders. And if you
want mail from root to be included in this treatment you have to change
the default 'EXPOSED_USER' setting which assumes that root mail will be
kept local or sent to an internal hub where you will want to see the
real sending host.
--
Les Mikesell
lesmikesell at gmail.com