When attempting to configure the plugin using Office 365, i get the following message:
ERROR: Failed to connect to server: Connection refused (111)
I added the website's IP address to the IP allow list in Exchange Online under connection filtering, but it's not clear to me that it's in fact the web server that's attempting to send the email, or some other server.
I've set up the right smtp server, enabled TLS and set port to 587, and am using correct credentials.
can you give me any clue as to what may be responsible for this error?