I have broadband service with ATT Uverse. The mail account (it's a @pacbell.net address) used originally to establish the service is one I no longer use for email communication, although I know the address & password (for web browser management of the account).
I have several Yahoo & gmail accounts I use: public (i.e., for use with user groups, etc); private (friends & family); business, etc.
I can receive mail via IMAP from all of these accounts without issue.
I can send mail using my gmail account -- specifying a gmail SMTP server -- and that gives no problems. I am also successful with an AIM.com account using an AIM SMTP server.
The problem is sending mail using Yahoo mail accounts. Using one particular of these Yahoo accounts (the only one that works, outbound) I can send mail via an ATT SMTP server (outbound.att.net with standard ports (25, 465, 587) and SSL) without any problems at all.
If I try to send mail from any other of these Yahoo accounts using that same SMTP server and settings I cannot. The error is:
"The sender address [myaddress]@yahoo.com was rejected by the server outbound.att.net".
I can't figure out why one of my Yahoo addresses is accepted by the SMTP server and the other Yahoo addresses aren't.
I've tried numerous (NUMEROUS!) Yahoo-named, ATT-named, and pacbell-named SMTP servers over the years with no success.
I tried the "15-minute rule": check mail on the one account that apparently is authorized, and immediately try to send mail with another account. No joy.
In the past (this has been happening for more than a year and I through a series of round-robin trying of different smtp servers I could mitigate the problem) but now I've upgraded OS and mail client and the problem doesn't seem solveable.
In the past I've called ATT customer service and gotten "Have you tried plugging it in" assistance. I'd rather not go there again.
Any suggestions would be greatly appreciated.
Thanks,
JJ
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