I have a small company LAN of about 50 people. I just installed a brand new Exchange 2010 server for them. Most of the clients attach to the Exchange 2010 server using Outlook and the Exchange protocol. No problem.
However, about 5-7 developers use Thunderbird as their email client, instead of Outlook. I have setup the internal certificate on Exchange with IMAP and POP3 services, but when I try to create accounts for Thunderbird email clients, I continually get an error message saying that it cannot find the security settings for the server. Which is Thunderbird "geek speak" for not able to authenticate. (the client is set for SSL/TSL authentication)
I also then tried setting up a POP3 account using Outlook 2010 and 2003 as a test. And neither of those email programs would authenticate for POP3 or even IMAP either.
Is there some type of setting under Exchange 2010 that I am missing to get it to respond and/or authenticate for POP3 and IMAP clients?
Thank you in advance,