Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Tbird Configuration for Yahoo/ATT Mail Not Working - "Unable to log in at server. Probably wrong configuration, username or password"

  • 2 replies
  • 1 has this problem
  • 1 view
  • Last reply by jeddolnick

jeddolnick
jeddolnick
more options

I'm setting up a new PC, and am using the same settings that have been on the old PC for three years and are in the Yahoo configuration guide: Pop3 inbound. att.net/outbound. att.net 995/465 SSL/TLS Normal Password 

I've been at this for hours, and Tbird just won't connect. The error is "Unable to log in at server. Probably wrong configuration, username or password". I am stumped.
I'm setting up a new PC, and am using the same settings that have been on the old PC for three years and are in the Yahoo configuration guide: Pop3 inbound. att.net/outbound. att.net 995/465 SSL/TLS Normal Password I've been at this for hours, and Tbird just won't connect. The error is "Unable to log in at server. Probably wrong configuration, username or password". I am stumped.

Modified by Wayne Mery

Chosen solution

AT&T server settings:

POP incoming server settings: Email-Server is 'inbound.att.net', port 995, connection security SSL/TLS, Authentication Method: normal password. User name is full email address. The outgoing SMTP server is 'outbound.att.net' on port '465', Connection SEcurity: SSL/TLS, Authentication Method: normal password. User name is full email address.

OAuth2 is not supported for the AT&T servers. Use normal password authentication but enter a secure mail key.

You will need to set up an app specific password/secure mail key and then at prompt enter that secure mail key instead of usual normal password. Info: https://www.att.com/support/article/email-support/KM1240308

Read this answer in context 👍 1

All Replies (2)

Toad-Hall
Toad-Hall
  • Top 25 Contributor
more options

Chosen Solution

AT&T server settings:

POP incoming server settings: Email-Server is 'inbound.att.net', port 995, connection security SSL/TLS, Authentication Method: normal password. User name is full email address. The outgoing SMTP server is 'outbound.att.net' on port '465', Connection SEcurity: SSL/TLS, Authentication Method: normal password. User name is full email address.

OAuth2 is not supported for the AT&T servers. Use normal password authentication but enter a secure mail key.

You will need to set up an app specific password/secure mail key and then at prompt enter that secure mail key instead of usual normal password. Info: https://www.att.com/support/article/email-support/KM1240308

jeddolnick
jeddolnick Question owner
more options

Ugh. I forgot about the OAuth2 from the last time I did this. That did the trick. Thank you!