General discussion


DMZ/internal DNS problem

By DaveChristensen ·
We have an Exchange 5.5 server on our "inside" network and a Kerio 6.0 mail server in our DMZ. I am having trouble with email not resolving so that messages from the Exchange server are showing "host not found" when I send mail to a domain on the Kerio DMZ mail server.

I have set up the DNS zones and have set up the host records so that mail clients "inside" can resolve to the server, but actual mail isn't resolving.

I've tried loading MX records that doesn't seem to solve the problem.

This conversation is currently closed to new comments.

Thread display: Collapse - | Expand +

All Comments

Collapse -

by sgt_shultz In reply to DMZ/internal DNS problem

got an event error (number)?

Collapse -

by CG IT In reply to DMZ/internal DNS problem

the Kerio mail server is in actuality a bridgehead mail server for Exchange. KB article 277693 deals with exchange being used as a bridgehead for Exchange 5.5 however the same principle applies whether its a Kerio server or an exchange server.

Here's the article:;en-us;277693

Related Discussions

Related Forums