Also, please do a spyware scan on your computer and verify that you do not have any antivirus or firewall software blocking your IncrediMail or email ports 25, 110, 143, 993, 995.
Incredimail is back on line. Part of the problem was Avast rejecting the certificate. Once I had told it to accept, things improved, but I still feel this was only part of the problem.
I use tesco.net, and gmail, so no problem there.
i have given up on Incredimail. I can only get it to receive mail if I use the command from the right click menu from the taskbar icon. I cannot get it to send mail at all, I have lost count of the number of times I have uninstalled and reinstalled. Back to Outlook! (Which works perfectly.)