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@xxxxxxxxx _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos