Exchange 5.5 Coexistence

[wdthurman]

We are currently evaluating Scalix and have it running on RHEL 4. Can send email from the Scalix server to our Exchange 5.5 server and to any other external domain without problem.

However, we cannot send from our internal Exchange 5.5 box to the internal Scalix box. We did not want to register another domainname just for testing, and understand why we cannot send from outside our domain back to Scalix.

Question is what has to be done to enable forwarding from our Exchange server to Scalix? I have read through Installation guide, Admin guide, and Migration guide and cannot find an answer. Help please.

[ScalixSupport]

You just need to use a subdomain. One detail I didn't see was whether external recipients could send into Scalix. A few questions...

1) Is there an mx record that points to the FQDN of the Scalix server?
2) Are there Scalix mailboxes that have a valid internet address that can receive based on that FQDN as well?

Let's assume your organization's internet domain is "company.com". Let's assume you then build a Scalix server, of which the FQDN is sxserver.company.com. Wheter DNS source is that Exchange server is looking at - needs an MX record to route to sxserver.company.com. Once this is in you should be able to send to user@sxserver.company.com and that will attempt delivery on the Scalix server. The Scalix server of course needs to have a mailbox which contains an internet address of user@sxserver.company.com.

Certainly this mailbox could have a primary IA or user@company.com and a secondary IA of user@sxserver.company.com.

Hope that helps,

Karl