We have an receive connector set up to relay messages from certain IP address using Exchange 2010 receive connectors. However, we have come across an issue where an email is being sent through the receive connector to an external email address but it is not using the appropriate send connector.
The send connector being ignored works from a client using Outlook, but the SMTP relay does not seem to be working.
My main question is when using receive connectors to relay message to an external address are send connectors still used or are they bypassed?
If they are not bypassed, what else do you suggest we look at?