Jeff, the authorization for 3rd party access to email accounts changed. Many ISPs are doing this. You will have to go into the AT&T account administration *for that email address* and generate a “password” to be used in Thunderbird in place of his actual account password. 

Yahoo! and AT&T has been sending out messaging on this for over a year. I procrastinated myself in performing the changes until each email finally quit. A couple last fall, a couple more last December, and I’ve just discovered a couple more this past week (which I need to address today). 

A related process is required in order to use a gmail (and some others) address on an iOS device. 

Let me know if you need more info. I had to google it last fall since I’d already deleted the emails directing me on how to avoid an interruption. 


tnx
Mike / W5JR
Alpharetta GA


On Mar 21, 2021, at 12:22, Jeff Clarke <ku8e@ku8e.com> wrote:


I'm sure everyone is getting the same message I get when you send an email to K4BAI at k4bai@att.net. I set this filter in my email account on Mozilla Thunderbird that will hopefully get rid of this. I've checked his email at his house and can't figure out what's going on.

Something that's strange is we changed his password on his account on the AT&T web mail. I deleted his account on Thunderbird and added it back.  It won't work with that password when I try to add it again. Must be some issue with AT&T and Mozilla.

I will let everyone know if the filter I set works. I'm sure other email software like MS Outlook have a similar feature.

Jeff


Sorry, we were unable to deliver your message to the following address.

<sanderson@gardener.com>:
550: Requested action not taken: mailbox unavailable

---------- Forwarded message ----------



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