I have been tracking an Weird problem on several ISPC servers. If I setup the client to use the ISPC server as its SMTP (Authenticated) and its pop3 server using outlook, some of the mail sent to another user in the SAME domain.tld get lost. Managers complain that their secretaries do not get mail sent to them from the managers mail address and secretaries complain that the domain members mail don't get delivered to them. This issue seem to be intermittent. It gets delivered as soon as we start testing!!! although I have seen some NOT going through. As we do not have proper logs after the mail is given to procmail to filter I can not detect were it actually get killed. It does get delivered to procmail.