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I am in the process of setting up a trial for user of Google Apps and have been unsuccessful in getting Kerio to forward mail to the Google domain. Kerio keeps reporting host not found even though the MX record for the subdomain exists.
Here is how I have it setup;
My domain name is (not real domain name) -
I have a CNAME record for my subdomain - is an alias for in my DNS
I have an MX record for This is my primary domain in Kerio and all is well
I have an MX records for which points to google's mailservers

If I send emails to user<_at_> outside of Kerio (ie: Mobile Me), everything is fine and the mail goes where expected
If I send an email to through Kerio while logged in as a user of (, Kerio reports: user<_at_> Result: failed, Status 5.4.4 Host not found.

On the Kerio server, if I do an MX lookup for, it comes up correctly but for some reason, Kerio can't find it and I can't figure out if it is because I am using a subdomain or not.

I have tried using the Forwarding option for the domain but that didn't change anything. Also, SMTP is set to Deliver using MX DNS Records.

Can anyone offer any suggestions?
I am running Kerio Connect 7 on OS X

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Also, a quick note that we have DNS running on the Kerio server. I added a CNAME record for and the reason is that if I didn't, definitely wouldn't resolve bu kerio as the internal DNS wouldn't have an A record for and the lookup would fail. If I browse to in Safari,it resolves to Once again, I can do an MX lookup on the Kerio server and it returns google's mailserver address as expected and it works outside of Kerio.

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I have tried to send a mail to


and it finds the server, but obviously not the user as you can se per the error message below. So you must have either a DNS config problem or your firewall doesn't let your Kerio Server send over port 25.

The server was not able to deliver your email message

Subject: test
Date: Thu, 29 Jul 2010 17:25:19 +0200

to the following addresses:

<user<_at_>> ( 550-5.1.1 The email account that you tried to reach does not exist. Please try
550-5.1.1 double-checking the recipient's email address for typos or
550-5.1.1 unnecessary spaces. Learn more at
550 5.1.1 b7si1073610faq.46)

So the questions is, can you send mail out to any server? (for example a hotmail account)

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