Looks like any one of the proposed solutions would suit my needs. In this particular scenario, the filtering sendmail server is internal to our organization. It is the server our email clients see as the SMTP server. I'm relaying the outbound email to our domain's 'real' SMTP server. From this I can assure all the clients that touch this machine have a known $Sender format.
When having a choice between a 'sendmail' or 'mimedefang' based solution, which one would provide the least performance hit on the server and email delivery? I'm inclined to apply a broad based solution that can be repeated in other scenarios...not just one of my solutions with an internal mail relay server. I appreciate all the responses. They have been very helpful. I intend to apply the changes after business hours tonight. I'll report back status. Brian _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang

