SMTP server without SSL support cannot be used? · Issue #187 · mattermost/mattermost-server · GitHub
![SQL SERVER - Database Mail Error: The SMTP Server Requires a Secure Connection or the Client was not Authenticated. The Server Response Was: 5.5.1 - SQL Authority with Pinal Dave SQL SERVER - Database Mail Error: The SMTP Server Requires a Secure Connection or the Client was not Authenticated. The Server Response Was: 5.5.1 - SQL Authority with Pinal Dave](https://blog.sqlauthority.com/wp-content/uploads/2018/06/dbmail-ssl-01-800x359.jpg)
SQL SERVER - Database Mail Error: The SMTP Server Requires a Secure Connection or the Client was not Authenticated. The Server Response Was: 5.5.1 - SQL Authority with Pinal Dave
![Why does Gmail (add accounts) using SMTP server recommend SSL instead of TLS? - Information Security Stack Exchange Why does Gmail (add accounts) using SMTP server recommend SSL instead of TLS? - Information Security Stack Exchange](https://i.stack.imgur.com/utLdI.png)