I-Thunderbird Community Forum

I have been using Firefox for many years without any problems. I’ve changed nothing on my laptop, but now, when I try and send an email, I get an “Unknown Identity” message. If I use my phone, everything works OK and I get no messages – it’s only on my laptop. See images of the messages attached. The location code in the message changes when I try and send another email. I’ve tried re-entering my mail server account details but problem still exists. Same thing if I try and add a new email address. I am not exactly computer-savvy and I have two questions: 1. What has happened (or what have I done) to create this problem? 2. How can I resolve this?

Thank you

Setting Up Thunderbird for AT&T Email I've used Thunderbird as my email client for years; however, about a month ago it stopped working and now I receive the following message, "Sending of password for user [email scrubbed] did not succeed. Mail server inbound.att.net responded: [SYS/TEMP] Server error - Please try again later". What do I need to do to get things working again in Thunderbird?

Four days ago the Att server started to refuse my password (I assume that was it). After four changes of password, including in Thunderbird, the password keeps being refused. Have exhausted several att agents who can't figure out why it doesn't work. One thought the server settings were correct.