Now I could see where the mismatched domains popup warning might be useful for some, but for me it just tends to get in my way. If you have not seen there errors in Firefox, they come up with somebody’s SSL certificate doesn’t match the domain name it is registered to.
The Remember Mismatched Domains extension for Firefox is here to save the day.
The Remember Mismatched Domains extension for Firefox and Thunderbird adds a “Don’t warn me again about this certificate for this domain” checkbox to the Domain Mismatch and Expired Certificate warning windows. When selected the domain name and security certificate domain pair (or certificate and expiration date pair) is stored in a Firefox / Thunderbird preference and the security error dialogue will be bypassed on subsequent visits.
Well now if this bugs you as much as it bugs me, you can get rid of it with the Remember Mismatched Domains extension.