Confluence - connecting to mail server error 421

[Dariush Tailor]

I have added the server hostname as the ip address of the web server.

Server port is 25

Not sure what to use as a username. Can this just be an account that is able to login to the mail server?

keep getting error: cannot connect to smtp host.

I have checked to make sure that smtp is working. Test done through cmd and it shows that the confluence server can connect to the mail server.

Any help would be much appreciated.

[Fabian Lim]

Hi Dariush,

You can find the following KB article which provides a few resolutions: https://confluence.atlassian.com/confkb/confluence-is-unable-to-connect-to-the-mail-server-response-code-421-314450663.html#:~:text=Confluence%20cannot%20reach%20the%20mail,the%20connection%20will%20be%20closed.

Good Luck.