Symantec Mail Security for Microsoft Exchange (SMSMSE) is not able to update its definitions via LiveUpdate. LiveUpdate fails with Event ID 35 and error message "LiveUpdate was unable to complete successfully." Rapid Releases definitions (which retrieve updates via FTP) could also not be downloaded
Forefront as Proxy Server is installed
Check configuration of LiveUpdate Proxy settings. If there are no entries for the Proxy, change the settings to use the Proxy:
If it is desired to also download the Rapid Release definitions, also change the settings on the FTP tab.