After upgrading to Symantec Mail Security for Microsoft Exchange (SMSMSE) to version 7.9 and later, virus definitions are no longer staying up to date automatically.
A proxy server is configured to filter HTTP traffic.
The mechanism SMSMSE uses to update virus definitions has been updated, and the method to configure proxy settings has changed.
Note: In the paths below, replace <version> with the version of SMSMSE that is installed.