sbcglobal.net address is no longer receiving mail

I tried the secure email key a couple weeks ago on the Gmail app, but it did not help. On Gmail I enter my username and password, then agree to the terms, and then I get a screen that has an error #404 not found in server.

Wait.  When you said "Gmail app" I thought you were referring to an email client app (e.g., Thunderbird, Outlook, mobile email client apps, etc.).  The behavior you are describing, i.e., logging in, agreeing to the OATH (?) terms, 404 not found) sounds like you are using a browser trying to access the webmail except there is no such thing as a gmail browser.  So you got me confused.Is there such thing a as a gmail app that actually is an email client?

If it is a browser the secure mail key is for email client apps only, not for browser webmail access.  To repeat, for browsers the server settings info and the secure mail key do not apply.

My att.net e-mail address that Covad routed to Yahoo mail long ago is no longer accessible on Yahoo and no longer downloads to my computer based email on Live Mail.  I no longer have an e-mail account with att per se. 

Yahoo says they don’t service att.net accounts anymore and att says I don’t have an account with them for email. I do have att mobility and long distance. 

Where are my emails going now? How do I access them? 

HELP! 

I cannot receive emails on either of our iPhones and our laptop, I have an sbcglobal.net address. I have re-entered both User ID and password (tried old passwords as well). Yahoo has been the server. The message shown states invalid ID; one time we got as far as asked security questions, and the answers we have(written/recorded) did not agree. My husband has been asked numerous times in the past on the iPhone to reset the password and always use the same method. It's been 4 days since receiving our last email on Monday 1/14. This has created a huge problem, my company has just been sold and everything is going electronic and I can't get any info for setting anything up with the new company within the time/schedule they've provided me. Please help, what is going on?

It is a hassle agreed, but don't worry, this is a problem that has been discussed and solved on the forum. Please see the thread below in this reply and look for those solutions that mention setting up a new Yahoo account on your mobile device and also others found success with a security key.

More detailed discussion on this thread:

"imap.mail.att.net is not responding"

Hope this helps.

Hi I wonder if anyone can help me. Ever since the split, my yahoo emails stopped receiving emails since 2017. I tried to sign in but it is not showing my emails, my mailbox stopped receiving emails from the day the split started. Please help. 

Are you referring to your Outlook, mobile or web-mail account?