An encrypted email connection has been detected

Hello experts,
I got the following problem. I NEED TO SOLVE IT. What should I do? Please help me to solve it.

Symantec Email Proxy
Symantec.
An encrypted email connection has been detected.
Please see help for more information on how to transmit encrypted
email.
Click here to go to Symantec Technical Support Knowledge Base…
1003.14
OK
Thanks a lot.
