No mails can be sent using authentication

Good morning

Hoped this would be better now with 3.0.4, but…
Still not able to send any mail through my mail server…always tells me:

E: authentication failure [SMTP: SMTP server does not support authentication.

And yes…my mail server supports authentication…even my laser printer can send mails through it…
Just a regular postfix installation accepting connections through port 25, 465 and submission port 587.

All I see in the mail logs is a connection attempt and then a disconnect…

thanks in advance

I created a bug here for this -

This should be fixed in 3.0.5 - Mail Notification Settings UI & Mail Sender Library Upgrade by curtishall · Pull Request #398 · bluecherrydvr/bluecherry-apps · GitHub

@davorin Are you using Debian / Ubuntu? Which distribution release?