![Firefox logo](https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/products/2020-04-14-08-36-13-8dda6f.png)
Sending of message failed. An error occurred sending mail: Unable to authenticate to SMTP server shawmail.vc.shawcable.net. It does not support authentication (SMTP-AUTH) but you have chosen to use authentication. Uncheck 'Use name and password' for that
Sending of message failed. An error occurred sending mail: Unable to authenticate to SMTP server shawmail.vc.shawcable.net. It does not support authentication (SMTP-AUTH) but you have chosen to use authentication. Uncheck 'Use name and password' for that server or contact your service provider.
This happened
Every time Firefox opened
== I upgraded to new version
Chosen solution
Firefox doesn't do email, it's a web browser.
If you are using Firefox to access web mail, you need to seek support from your service provider or a forum for that service.
If your problem is with Thunderbird, see this forum for support. http://www.mozillamessaging.com/en-US/support/ or this one http://forums.mozillazine.org/viewforum.php?f=39
Read this answer in context 👍 4All Replies (1)
Chosen Solution
Firefox doesn't do email, it's a web browser.
If you are using Firefox to access web mail, you need to seek support from your service provider or a forum for that service.
If your problem is with Thunderbird, see this forum for support. http://www.mozillamessaging.com/en-US/support/ or this one http://forums.mozillazine.org/viewforum.php?f=39