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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

tesco mail configuration - security certificate problems

  • 1 reply
  • 2 have this problem
  • 3 views
  • Last reply by christ1

moorpaul
moorpaul
more options

I have configured Tesco.net messages to be picked up in Mozilla Thunderbird, but whether or not I am using the program I keep getting a box to tell me to 'add security exception', because Tesco is attempting to identify itself with invalid information. The security information is, in fact, correct, but although I click the 'confirm security exception' button, the program won't accept it. Sometimes, I have to click the button 10 or 15 times before the box disappears, only to reappear several times during the course of the day.

How can I stop this?

I have configured Tesco.net messages to be picked up in Mozilla Thunderbird, but whether or not I am using the program I keep getting a box to tell me to 'add security exception', because Tesco is attempting to identify itself with invalid information. The security information is, in fact, correct, but although I click the 'confirm security exception' button, the program won't accept it. Sometimes, I have to click the button 10 or 15 times before the box disappears, only to reappear several times during the course of the day. How can I stop this?

All Replies (1)

christ1
christ1
  • Top 25 Contributor
more options

What reason does Thunderbird give for rejecting the cert in the first place?

More information in this article.

https://support.mozilla.org/en-US/kb/add-security-exception

There have been reports before about a bad Tesco cert, so I guess they still haven't managed to fix it.