Our Scalix Server is configured to use a domain, say "mydomain.ca". We need to create external email addresses that use "@lists.mydomain.ca" such that we can reach our mailman server which handles all of our groups/lists. Basically, I need that subdomain to be considered like an external domain to our Scalix server. It should not try to resolve those addresses that use a subdomain of ours.
When sending from Outlook (using the Scalix Connector), users always get an error that the recipient cannot be found in the relay table. How can I solve this? Ultimately we would be able to have some control over the Scalix relay table. Or is there any way to have all messages loop through an external MTA such as Postfix beforehand?