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FirstClass mail server [message #831] Tue, 24 August 2004 08:08 Go to previous message
Messages: 2
Registered: August 2004
Junior Member

We are currently using FirstClass server ( and it seems to work just like Exchange: it accepts all mails and sends NDNs if the user name is not found. We are quickly running out of licenses, when spammers try to guess user names on our site (e.g. joe, joe2, joe3, etc.) and so NST needs to be restarted every day for spam filtering to be effective. Does anybody know how to make FirstClass not to accept mail for unknown users or to work around this problem?

Another problem with licenses is that many users use aliases, and we need double amount of licenses. But maybe it's impossible to implement alias checking in NST?
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