ProxiSpam is an online service to protect e-mails from spam. It is used by:

• ISPs;
• companies, universities, administrations and other entities;
• the NetCourrier free mail service;
• the NetCmail free mail service;
• the Proxitools professional mail service.

This service can be used free of charge by ISPs, companies and other entities, within a limit of 50000 mails checked per day.

Depending on the activity and of the configuration of the mail system, ProxiSpam can remove more than 50% of the spam messages received by a mail platform. The ProxiSpam service comes in addition to usual antispam tools, which distinguish spam messages from proper e-mails and place them in a "Spam" folder. An optimal antispam solution requires the conjoint use of both technologies.

ProxiSpam	Usual antispam
ProxiSpam allows the mail server to refuse spam messages completely. The sender of the message receives a rejection code which allows him to contact ProxiSpam if needed.	A traditional antispam allows the end-user to receive his e-mails without his spams, which are placed in a "Spam" folder. Since there are false positives, identified spams cannot be deleted automatically.
ProxiSpam reduces the number of spam messages received and handled by the platform. These messages do not congest the e-mail storage entity, nor the user's mailbox.	A traditional antispam allows the user to avoid spam messages in his "inbox" folder.
Spam messages which are not detected by ProxiSpam are not separated from real messages and stored in a "Spam" folder.	A traditional antispam does not reduce the number of received spam messages. The user must regularly check his "Spam" folder to look for possible false positives.

To use the ProxiSpam service for free, you must:

• have your own Postfix-based mail service;
• ask for permission by providing ProxiSpam with the name of the entity wishing to use it and a contact e-mail address;
• configure ProxiSpam by providing the list of IP addresses of the mail servers;
• configure Postfix as described in the online documentation.

ProxiSpam provides statistics indicating the number of spam messages blocked by the service.



ProxiSpam is based on the MailObject technology.