I've tried dozens of solutions for ridding my small company of spam, and nothing worked - that is until I dumped Exchange server and signed up to have Google's Gmail admin all the email accounts. (http://www.google.com/a/help/intl/en/var_2.html) I was wary of using Google for something as mission critical as my company's email, and tried it out of desperation. I've used my domain/email address since 1995 or so, and even though I'd been pretty careful with it (not using it on newsgroups, mailing lists, etc.) we were still logging at least 100 spam messages per day - and that was AFTER the anti-spam filters had a crack at the inbox.
The cool thing about Gmail's approach is that I can still get to my email from anywhere (as with Exchange Server) but it's now virtually spam-free. I've gone from at least 100 spam messages per day that got around my filters to MAYBE one or two per week. Same email address - but now almost entirely spam free.
For companies of 50 or smaller, the Gmail-hosted domain solution is free. (For larger domains, they charge a fee - but it's fairly reasonable.)
If you can live without Exchange Server (and it's evil twin, Outlook), it's worth a look.
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I've tried dozens of solutions for ridding my small company of spam, and nothing worked - that is until I dumped Exchange server and signed up to have Google's Gmail admin all the email accounts. (http://www.google.com/a/help/intl/en/var_2.html) I was wary of using Google for something as mission critical as my company's email, and tried it out of desperation. I've used my domain/email address since 1995 or so, and even though I'd been pretty careful with it (not using it on newsgroups, mailing lists, etc.) we were still logging at least 100 spam messages per day - and that was AFTER the anti-spam filters had a crack at the inbox. The cool thing about Gmail's approach is that I can still get to my email from anywhere (as with Exchange Server) but it's now virtually spam-free. I've gone from at least 100 spam messages per day that got around my filters to MAYBE one or two per week. Same email address - but now almost entirely spam free. For companies of 50 or smaller, the Gmail-hosted domain solution is free. (For larger domains, they charge a fee - but it's fairly reasonable.) If you can live without Exchange Server (and it's evil twin, Outlook), it's worth a look.