[Users] Unable to send messages

[Richard]

> Date: Sunday, March 13, 2022 07:09:26 +0800
> From: Bret Busby <bret at busby.net>
>
> The Network log from  claws mail version 3.17.7 (the later version
> and less detailed Network log) is
> 
> "
> * Account 'bret at bretbusby.net': Connecting to SMTP server:
> mail.bretbusby.net:25...
> *** mail.bretbusby.net:25: connection failed (Connection timed out).
> *** Error occurred while sending the message.
> * Account 'bret at bretbusby.net': Connecting to SMTP server:
> mail.bretbusby.net:465...
> *** Session timed out. You may be able to recover by increasing the
> timeout value in Preferences/Other/Miscellaneous.
> "
> 
> both those instances are with timeout set to 180s.

For port 465 you should (generally) have claws set for ssl/tls. 

Did you try port 587 -- it appears to answer as expected. For it you
should have starttls set.

All this depends on the configuration of the server you are
connecting to. I suspect that this is some type of shared hosting, so
you may need to ask the provider what/how they have things set up by
default. If you did the configuration you may need to double check
the setup.