Can't send any emails

[peasblossom]

Receiving emails is fine but suddenly I can't send any emails via Thunderbird. It's fine if I use my webmail account though. Port number is 110 (default) and all other settings are ok. Ideas? Thunderbird's error messages are pretty vague, I'm afraid.

[Simon]

Any error message might help more than none.   What's it's saying? 

[peasblossom]

Just 'login in to smtp server failed.' 'Verify that your smtp settings are correct', that type of thing.  But as it turns out I found this and post it for anyone else wrestling with the same problem:

https://support.mozilla.org/en-US/kb/cannot-send-messages

Deleting and re-entering the password sorted it.

[Simon]

Thanks for letting us know!