antivirus and antispam

There are a couple of issues there:

1) Regarding antivirus antispam software, treat those as separate products
on the server. A good antivirus software will include client monitoring
as long as you by enough client licenses to monitor all of your clients.
Symantec, Trend Micro, CA, NOD32 all play in this space. Each environment
is different and each sysadmin has their own preferences. Download trial
editions and test drive them until you find one that *you* like. After
all, someone could praise Trend Micro all they want, but if it breaks your
LOB custom-written inventory application then all that praise does you no
good. Testing for yourself is the only *real* solution.

2) Treat Antispam the same way. Although some companies may 'bundle'
their packages, when installed they still operate very differently. As
well they should since are trying to accomplish different goals. And
maybe you like Symantec's corporate AV product but not their
exchange-aware antispam. So you may end up mixing and matching....NOD32
for AV and GFI for antispam. But the only way to find out is to download
and test. Each sysadmin has their own preferences for ease-of-use vs
configurability, so there is not a "one true" answer. I, for example,
like to filter spam at the gateway, so whenever possible my installations
include a UTM firewall with spam filtering. That way I don't even have to
install "yet another" product on my SBS box at all. Spam is stopped
before it gets there. But that is a personal preference.

3) As far as monitoring for compromised machines, no product will do this
accurately. Antivirus software should be viewed as a protective measure.
It is good at keeping bad stuff off of your machine, but if something bad
*does* get past the AV then why should you trust the AV to know it. The
malware has already shown that it circumvented the AV once, so it could
lie to any heuristics engine the AV tries to employ. Or simply disable
the product in the background and sent false "ok" messages to the

monitoring server. The simple truth here is that spotting an infected
machine requires diligence on the part of the IT department. Reports of a
machine behaving poorly/slowly is a good sign. Monitoring the weekly
usage report will show any malware using Exchange to send mail (unlikely,
BTW.) And monitoring firewall logs (you do have a firewall, right?!?)
will reveal any machines attempting to run their own SMTP server for
spamming (far more likely.) So, as you can see, finding a bad machine
doesn't come from one piece of information such as an AV snap-in, but
comes from aggregating *all* of your sources for information with a pinch
of plain old experience added to the recipe.

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