Combine that with solid malware protection on your client machines and a proper 'lock down' of SMTP traffic to and from your Exchange server and you shouldn't need to worry too much about scanning messages at the Exchange level.ĭon't take this as gospel though - it's just my two cents. This will make be sure your email is squeaky-clean. The Messaging Security Agent doesn't give you much bang for the buck and you'd probably safer using an offsite spam filtering service to inspect both inbound and outbound SMTP traffic. The ranges are:ĭo you already have an offsite spam filtering solution in place, and if so, are you satisfied with it? If that's the case, I'd push you to save some dough and just use the WFBS Standard package instead of Advanced. This scheme gives you some flexibility and the service overall is actually a pretty good value. *However,* the Hosted Email Security is also included in the package and is normally licensed per user, but Trend Micro does this by using a range instead of a strict number. The Messaging Security Agent for Exchange will scan all messages passing through the Exchange server and can do some scanning of Information Stores and user mailboxes, but to my knowledge does not need to be licensed per user. Trend Micro Hosted Email Security (hosted/off-site spam filtering) Trend Micro WFBS Messaging Security Agent (local anti-spam/malware protection for Exchange) Trend Micro Worry-Free Business Security (WFBS) Advanced includes the base malware protection provided by the Standard package, in addition to including: It's been a while, but if it works like I remember.

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