This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Thunderbird will not let me send emails unless I first click on "Confirm Securtity Exception" on their Add Security Exceptin popup. The popup occurs everytime

more options

Thunderbird will not let me send emails unless I first click on "Confirm Security Exception" on their Add Security Exception popup. The popup occurs every time I click within Thunderbird.

Has anyone clicked on "Confirm Security Exception" and then found someone got access to all their financial accounts?

Thunderbird will not let me send emails unless I first click on "Confirm Security Exception" on their Add Security Exception popup. The popup occurs every time I click within Thunderbird. Has anyone clicked on "Confirm Security Exception" and then found someone got access to all their financial accounts?

All Replies (2)

more options

Hello, this should only happen if you have configured an e-mail server that is not providing a valid TLS/SSL certificate.

Another possible reason for this to happen is anti-virus software like avast which tries to read your e-mails in order to protect you from bad software. But to do so, the software must inject an own certificate.

Could you look at the certificate details and provide me with the Common Name (CN)?

Perhaps this article helps you too: https://support.mozilla.org/en-US/kb/add-security-exception

more options

I started using Thunderbird about 8 months ago because I wanted to switch from POP3 to IMAP. I added php code on our server that correctly identifies over 90% in Auto Replies in incoming mail and moves them to another IMAP folder.

The certificate popup started occurring today and 'occurs when every I click in Thunderbird'. Non-malware software would not do that unless they have a bug.

I ran Malwarebytes and it found possible problem. Removing that file and re-booting did not fix problem.

Certificate details Common Name *.securesies.com

MYNAMESERVER LLC Serial Number 02:DB:99

Issued by GeoTrust SSL CA

Begins On 4/30/14 Expires 12/2/16