Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.
Solved In die argief

Inbound server error

haveforkwilltravel

I moved from CA to AZ and am stuck with CenturyLink. Now when I try to use Thunderbird as my mail client, I get the following error message: "Sending of password for user stumpie1@sbcglobal.net did not succeed. Mail server inbound.att.net responded: Server error - Please try again later."

I'm using a POP mail server "inbound.att.net", SSL/TLS Normal password. It worked just fine with ATT Uverse connection, but not here.

Login to the outbound server also doesn't work. I downloaded and installed the latest Thunderbird version. Everything works just fine on Firefox.

Any thoughts are appreciated.

I moved from CA to AZ and am stuck with CenturyLink. Now when I try to use Thunderbird as my mail client, I get the following error message: "Sending of password for user stumpie1@sbcglobal.net did not succeed. Mail server inbound.att.net responded: Server error - Please try again later." I'm using a POP mail server "inbound.att.net", SSL/TLS Normal password. It worked just fine with ATT Uverse connection, but not here. Login to the outbound server also doesn't work. I downloaded and installed the latest Thunderbird version. Everything works just fine on Firefox. Any thoughts are appreciated.
Lees dié antwoord in konteks

Gekose oplossing

You have to create the key on the AT&T site and then enter it when TB asks for a password.

https://www.att.com/support/article/email-support/KM1240308

All Replies (4)

AT&T accounts require secure mail keys in TB:

https://support.mozilla.org/en-US/questions/1316946#answer-1373790

I deleted the password from Saved Passwords in Options as you instructed. I restarted TB and it asked me for a password, which I entered but didn't save. AT&T didn't offer me an alternative secure mail key.

Gekose oplossing

You have to create the key on the AT&T site and then enter it when TB asks for a password.

https://www.att.com/support/article/email-support/KM1240308

Cool. It worked. Now TB is functional. I checked it on the mail in Firefox and on my cell phone and it also worked. Thanks. I appreciate the help. I made a note of the secure key so I can enter it in the future.

Cheers!

Paul