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SMTP Settings

  • 6 replies
  • 2 have this problem
  • 7 views
  • Last reply by christ1

keagan_leroux
keagan_leroux
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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 mail.wizardtower.com must be corrected.


this is the error I keep getting on my laptop, I can receive email fine just cant send out, I get the Certificate exception and add it, deleted all my local files after an uninstall and did a fresh reinstall same results. The annoying part is that on every other computer my account works fine but it's only on the new laptop that it won't double checked network stuff to make sure Thunderbird wasn't getting blocked by anything.

Help?

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 mail.wizardtower.com must be corrected. this is the error I keep getting on my laptop, I can receive email fine just cant send out, I get the Certificate exception and add it, deleted all my local files after an uninstall and did a fresh reinstall same results. The annoying part is that on every other computer my account works fine but it's only on the new laptop that it won't double checked network stuff to make sure Thunderbird wasn't getting blocked by anything. Help?
Attached screenshots

All Replies (6)

keagan_leroux
keagan_leroux Question owner
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Attempted suggestions from https://support.mozilla.org/en-US/questions/1305910 Did not help sadly.

William Davis
William Davis
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Try changing from STARTTLS to SSL/TLS

Modified by William Davis

keagan_leroux
keagan_leroux Question owner
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William Davis said
Try changing from STARTTLS to SSL/TLS

Should have been clear, have tried all various combinations of the settings allowed. (the default ports, the authentication method and the connection security. No changes, same error.

It is our own mail server and we updated our certificates recently, these settings work on every other device I've installed on including my phone. It works in other mail clients. Just not thunderbird my preferred one on this laptop. (windows 10 on each pc device, firewall exceptions set for mail clients)

sfhowes
sfhowes
  • Top 10 Contributor
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Is this the 'self-signed certificate' bug that affects TB 78 but not 68?

https://support.mozilla.org/en-US/questions/1308004

keagan_leroux
keagan_leroux Question owner
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sfhowes said
Is this the 'self-signed certificate' bug that affects TB 78 but not 68? https://support.mozilla.org/en-US/questions/1308004

It was, thank you.

christ1
christ1
  • Top 25 Contributor
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So your Thunderbird is attempting to securely connect to mail.wizardtower.com.

I get the Certificate exception and add it

Inspect the certificate - see the attached screenshot for instructions. What is the common name (CN) of the server's cert? Please post a screenshot of the Certificate Viewer window with that information visible. https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem

Are there any SANs in the server's cert? https://www.ssl.com/faqs/what-is-a-san-certificate/#content

Modified by christ1