Channel configuration

Summary:

Hello!

I have created a new channel but I have the problem that there is no connection between OFSC and the external system.

How can I check that the Host is the correct one?
Because testing from Postman I have no problem, I receive the mail correctly. But from OFSC the mails do not go out, I get the error “MESSAGE_STEP_EXPIRED”.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

24C

Code Snippet (add any code snippets that support your topic, if applicable):