Sage 50 cannot communicate with your email program Using Thunderbird

SUGGESTED

I saw all of the posts regarding the issue and realize that it's been done to death but we are having trouble emailing anything out from Sage 50 as it will give us an error message stating "Sage 50 cannot communicate with your email program."

* Thunderbird is now set it as the default client,
* Mailto: links work and bring up Thunderbird.
* MAPI links work from other programs like Crystal Reports.
* No Antivirus or Firewall software is running.

But still Sage 50 still brings up the error message. Anything else I can try? We are using a Windows 2008 R2 server and there are no Sage 50 updates left to apply.

Thanks,

Stan