Unfortunately I cannot just say: remove M$ mail exchange and install a SuSE mailbox instead, since M$ has still some advantages for internal use! We would like therefore slowly go over to the new system by leaving the old system untouched. My solution would be: Mailserver mail.* gets all the mails, and use all tricks, like white listing, rbl, ... virus scan and forward than all messages to mail-internal.* (which is this unavoidable M$ box). How can I setup that all incoming mails are after proceeding forwarded to mail-internal? How can I make all outgoing emails going through mail.*, so that the header would be tagged and replies would go through? Third, I need to make the webinterface available of the Internal mailserver, this I will do by DNAT and use a port 8000 which will be forwarded to port 80 on the internal machine. Even through this way the mails must go through the mailgateway mail.* Does anybody has good starting points for this project? bye Ronald -- Ronald Wiplinger (CEO of ELMIT) http://www.elmit.com +886 (0) 915 653-452 - I'm a SpamCon Foundation Member, #694, Verify it at http://www.spamcon.org PS: Spam prevention! Our system is protected with a spam prevention program. If you send us an e-mail, our system will send you a confirmation message back. Just reply to this confirmation message please. After receiving this confirmation message, our system will send the hold message (one) and all future messages (after the received confirmation message) to me without asking you again.