When attempting to send emails from several of my email addresses via Thunderbird a warning message displays:
“You are about to override how Thunderbird identifies this s… (read more)
When attempting to send emails from several of my email addresses via Thunderbird a warning message displays:
“You are about to override how Thunderbird identifies this site. Legitimate banks, stores, and other public sites will not ask you to do this. Location: smtp.astound.net:587 Get Certificate [a Button] This site attempts to identify itself with invalid information. View [a ButtonAdd] Wrong Site The certificate belongs to a different site, which could mean that someone is trying to impersonate this site. [checkbox] Permanently store this exception. Confirm Security Exception [Button] Cancel [Button]”
Behind that message another error message displays:
“Sending of the message failed.
Unable to communicate securely with peer: requested domain name does not match the server’s certificate.
The configuration related to smtp.astound.net must be corrected.”
My main email xxx@astound.net works fine. However several other email addresses xxx1@astound.net, xxx2@astound.net trigger those messages when attempting to send from those addresses.
I can send OK from web mail, but that error occurs when attempting to send via Thunderbird.
When I set up all of those email addresses earlier this year they all sent fine from Thunderbird.
As recently as September 5th, 2023 I have successfully sent from those email addresses.
It looks like a new version of Thunderbird was deployed a week or two ago based on seeing some differences in the interface and other behavior.
I have been using eset antivirus for years.
I recently loaded Malwarebytes on this system.
From certificate which displays when clicking on view:
Subject name is mail.astound.net
Issuer is GoDaddy.com, Inc.
Validity
NOT BEFORE MON, 21 AUG 2023 19:01:06 GMT
NOT AFTER SUN, 15 SEP 2024 13:31:42 GMT
Questions:
1. Should I accept the security exceptions? (I am reluctant to do so without understanding the reason it is warning me.)
2. Any ideas of what is triggering these messages and stopping me from sending emails from those addresses because an issue relating to the server’s certificate is detected?
3. Why would this be happening for all of my astound email addresses except for the main one that I use?
(the one difference I see in the account settings is that the smtp server for the main email which sends fine is mail.astound.net, whereas the smtp server name for the others is smtp.astound.net The port is the same for all, 587.)