But, if I copy link and copy into browser it works fine. 

when I click on links to take me to website through my email in Thunderbird that I will get an error message that reads "we could not verify the certificate, reason=wronghost" Do you get the error in Thunderbird or in the browser? What browser? But, if I copy link and copy into browser it works fine. Is that the same browser as the one which opens when you click the link in Thunderbird (a.k.a. your default browser)? In answer to these questions: I use Chrome or Duck Duck Go. Duck Duck Go is my default browser. If I copy and paste link from email in browser it opens, but if I click on link in email I get the error message above. Also when you reply the email is a do not reply email so I can't reply back. Please include a good email so I can answer any questions you may have. Thank you