The system of protection against advertising mail messages

On the mail server Mail.JINR.Ru a new system of protection against advertising mailings is applied. Each received message is automatically tested by the protection system and in case it contains characteristic features, then a special word-marker is placed in the subject of the message:
subject: ***SPAM*** message subject
The presence of a marker allows each user to configure a simple filter in his email program and already handle unwanted messages automatically according to his rules.
Also, the security system adds a number of technical lines to the list of service headers (usually "invisible" when viewing a message). One of them:

X-SPAM-Flag: YES
Allows each user to configure an additional filter in the mail program for more accurate work of the message processing system.

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