Howdy!
So, this is on a pretty fresh install of FreePBX via the beta iso.
Slapped the premium admin module on so I can do SMTP, gone to set up SMTP with my provider of choice. This is running over TLS and using username/password auth, with the host being outbound.mailhop.org:587.
So I think I’ve got everything set up right, but looking at the debug I don’t think it’s getting as far as even using the credentials I’ve given it. I’m seeing the below in the debug screen on trying to send an email:
2025-06-15T16:01:29.304775+01:00 freepbx01 postfix/smtp[8065]: 10B6F7FC5F: SASL authentication failed; cannot authenticate to server outbound.mailhop.org[35.157.29.171]: no mechanism available
2025-06-15T16:01:29.465785+01:00 freepbx01 postfix/smtp[8065]: warning: SASL authentication failure: No worthy mechs found
Looking at historical examples of Debian folks bumping into this, I’ve seen some folks suggesting that installing the libsasl2-modules module has resolved this for them, but these are decade old threads, so I wanted to see if there are alternate options. Pretty sure this is a bug of some flavour.