An error occurred while sending mail. The mail server responded: Request failed; Mailbox unavailable. Please verify that your email address is correct in your a
For a month now one of my 4 email addresses has given the famous error message that gets a lot of play on these pages:
An error occurred while sending mail. The mail server responded: Request failed; Mailbox unavailable. Please verify that your email address is correct in your account settings and try again.
The other ones work fine, except for my (my name)@sbcglobal.net, which, when I try to send from returns this error message:
Login to server outbound.att.net with username (my name)@sbcglobal.net failed.
It is worth noting that 3 of my email addresses work fine, so the above error message is not the root problem (?)
I tried removing the REPLY TO entry, and putting in the same email address in that box as the email I was sending from. These solutions worked for some people, but make no difference for me. Any other things to try? Thanks for any suggestions.
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Info:
- https://www.att.com/esupport/article.html#!/dsl-high-speed/KM1010523?gsi=hyp4kn
- https://www.att.com/esupport/article.html#!/email-support/KM1240462?gsi=hypmwg
The first link mentions a security upgrade is coming to AT&T email. I'm presuming the account in Thunderbird is a pop mail account based on the outgoing server info you supplied.
If yes, then according to info you will need to create and use a secure mail key. You’ll use this secure mail key instead of your AT&T password.
I am having the same problem, but I'm not with AT&T, I'm with Yahoo. Any help would be appreciated!
his conversation is would appear continues here https://support.mozilla.org/en-US/questions/1275119