I have an on-premise setup consisting of two 2013 Exchange Servers in a clustered DAG.
Recently a sister organization has requested to be able to send mail to us from their mail server, and also have our users be able to email their users back to their mail server.
IMPORTANT - We are in an INTRANET configuration, with direct access between our sites and no INTERNET connectivity. Both sites have their own Domain and their own Mail Servers.
On our domain, our mail domain is the same as our domain name:
Domain name = mydomain.com
Example mailbox = user1@mydomain.com
For our sister domain:
Domain Name = theirdomain.com
Example mailbox = user1@weloveemail.com
I am attempting to set up a Send Connector on our side so that our users can email our sister organization, and the emails keep getting stuck in the queue: "A matching connector cannot be found to route the external recipient"
What I have done:
- Set up an Accepted Domain for "theirdomain.com"
- Set up a Send Connector for *.theirdomain.com
- Restarted Exchange services, as well as Restarted the servers completely
Additional Info - we have a conditional forwarder to our sister domain - "theirdomain.com". I can ping their mailserver mail.theirdomain.com just fine.
What I have also tried:
- Set up an Accepted Domain for "theirdomain.com"
- Set up a Send Connector for *.weloveemail.com
- Restarted Exchange services, as well as Restarted the servers completely
Any help/advice is greatly appreciated! I have looked up multiple articles online including Practical365, etc.