Just a note for anyone else having this problem.
The reason the server in question required port forwarding for Seive from the WAN IP address was because of a typo in the /etc/hostname file. Fixing that type so that the master Kolab server listed in the Settings tab of the webadmin resolves to the localhost removes the need for the port forwarding. That was the default case with the other servers that I am running. Soren -- Soren Stoutner Small Business Tech Solutions so...@smallbusinesstech.net 623-262-6169