Delivery message: Could not connect to SMTP host, port: 25, response: 451
Concurrent job is scheduled to deliver by email. Sometimes it fails to deliver with Delivery message: Could not connect to SMTP host, port: 25, response: 451
It seems according to standards RFC - the sender MUST retry after 1 attempt has failed... I can see in FNDOPP log that it took around 6 minutes for delivery before error was written.
Question1: does it really retrying during this 6 minutes time if 1st attempt fails?
Question2: Can we configure the way that it will retry or retry longer?