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Receptional - 11:10 am on May 14, 2002 (gmt 0)
It also has a "whitelist option" and spam filtering, but the virus sniffing is working well for us, we got blasted by Klez-g,H and goodness knows what else last week and all I got was messages from Port995 saying that the emails were blocked and a polite message sent back to the originator of the email. Makes me feel happier about using Outlook, but we use zonealarm and NAV as well... justin case.
If security is your main concern, Take a look at port995.com as an extra level of protection. It zapa all incoming and outgoing emails at the server level, so your Norton AV becomes the "backup virus checker". Really neat system, but needs a little setting up.