Technology

Level of trust

A key component of NoSpamProxy is a function that has never been featured in any other anti-spam solution. The Level of Trust filter
The filter learns the communications relationships - sender and recipient addresses - and assigns bonus points (trust points) to these.
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False positives and quarantine

NoSpamProxy does not file any mails into a quarantine folder. The problem with all anti-spam solutions is that software decides whether or not a mail is spam and whether it should be let through. The general problem in this is that not all spam messages are detected, as well as the fact that good mails are incorrectly blocked.
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Documentation

Here you will find the complete documentation about NoSpamProxy.
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Non delivery reports

As you have possibly already read under false positive and quarantine, NoSpamProxy does not use any quarantine, but rather refuses messages and creates an NDR (non delivery report). Previously, it was usual as a service to generate a non delivery report and transmit it to the sender.
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NoSpamProxy or MTA?

However, the increase in advertising messages has also persuaded the manufacturers of mail servers to include various filters in their systems. The question therefore arises as to what extent a product such as NoSpamProxy is still required. We think it is.
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Integration

NoSpamProxy is a not a mail server as such, but rather an SMTP proxy, that passes on all connections to your actual mail server with a brief delay. So that NoSpamProxy can work effectively, incoming SMTP connections must first reach NoSpamProxy. Any relay prior to that is not possible, since the connections cannot otherwise be refused without danger.
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Exchange IMF

Maybe you are already using Microsoft Exchange 2003 and have installed the Intelligent Message Filter. Even within this configuration, NoSpamProxy is more important than ever, as IMF is recognised as being highly efficient, but only becomes a secure solution when used in conjunction with NoSpamProxy.
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