If you are using the latest version of Thunderbird, no need for a generated password, just use OAuth2 as the authentication method. Tbird Server setting. Edit: just noticed you have already changed to OAuth2 Doh!

That the HTML email sending works fine from outlook express/windows mail/outlook, it does lead to it beig a problem with thunderbird. Has there been an update to ithunderbirs lately? That it's getting and abuse warning back from the smtp server, sounds like something in the way it's sending is comming off as spam, etc. Thanks for the reply, but the problem is with Thunderbird using TLS. My server has all SSL version disabled, and I can connect to the same account on 993/TLS just fine thru Outlook. It's Thunderbird that hangs when trying to connect over 993 with SSL/TLS (there isn't an option to select one or the other, tho in previous versions it looks like Portions of this content are supposed to enable TLS on the SMTP server. Read this answer in context 0 Question Emails but I'm able to receive. Read this answer in context 5 Question Windows Vista and running Thunderbird 31.5.0. This guide will walk you through the changes you need to make to your current Thunderbird configuration in order to begin using your Stern Gmail account. NOTE: This guide is not intended for clients who want to setup Thunderbird for the first time, but rather for those clients who already use it. This document was created using Thunderbird v3.1.9. Add-ons may stop working when you update Thunderbird or they may cause Thunderbird itself to stop working. If you are able to run Thunderbird in Safe Mode, your problems are probably caused by an add-on. To get Thunderbird working again, disable the add-on and contact its author for support. Mozilla does not provide support for third-party add-ons.

Thanks for the reply, but the problem is with Thunderbird using TLS. My server has all SSL version disabled, and I can connect to the same account on 993/TLS just fine thru Outlook. It's Thunderbird that hangs when trying to connect over 993 with SSL/TLS (there isn't an option to select one or the other, tho in previous versions it looks like

With Thunderbird open, click on the 3-bar (menu) icon > Help > Troubleshooting Information. It will open a new tab. In there, ensure you have the Include account names (possibly identifying information) box checked to refer details to their accounts and check for any additional info related to the account. Nov 04, 2017 · To fix Mozilla Thunderbird issues on Windows 10 go through the following workarounds and solve Thunderbird problems. Fix Thunderbird issues on Windows 10 Fix 1 – Update Thunderbird. At times, you might face certain issues with Thunderbird on Windows 10 because of the out-of-date version of your email application.

Feb 10, 2010 · The message could not be sent because the connection to SMTP server smtp.att.yahoo.com was lost in the middle of the transaction. Try again or contact your network administrator. I am using Thunderbird 3.0.1 on Windows XP SP3.

As of today, the Thunderbird project will be operating from a new wholly owned subsidiary of the Mozilla Foundation, MZLA Technologies Corporation. This move has been in the works for a while as Thunderbird has grown in donations, staff, and … Continue reading. January 1, 2020 COMMENTS 112 Thunderbird, Enigmail and OpenPGP