Hi Mr.Gorham,
First of all Spaming and relaying are different. Spaming ------- Spaming is flooding the Internet with many copies of the same message. SPAM costs the sender very little to send, most of the costs are paid of by the ISP and the receiver as it chew up the bandwidth and can even cause the mail servers to perform sluggishly or stop performing. Mail filtering in the Mail Transfer Agent (MTA) is the only practical solution today for removing SPAM messages. According my personnel experience - Virus Wall with eManager from Trend Micro provide a good spam filtration - If u are using Netscape mailing solution - UBE filters can provide some functionality of blocking mails which can be classified to be a spam mail - Or another alternative is to get subscribed to RBL filters. Even though ur question was not on relaying.. Relaying -------- Relaying is using a mail server to send mails to Internet using smtp protocol. If used by unauthorized users will cause chewing ur machines cpu, ram and the bandwidth. To block unauthorized use of mail servers for relaying, put appropriate rule in the mailing system application to ensure that messages are processed by the SMTP gateway only if the messages are originating or terminating to/at ur domain name. Further to the same, ensure that user need to be authenticated before any mails are allowed out to block the relaying to greater extent. Warm Regards __________________________________________ Shoney Joy Consultant - Security Practice Bangalore Labs Level - 7 Innovator International Tech Park Bangalore - 560-066, India Ph - +91-80-8410-801 (ext-117) Fx - +91-80-8410-808 ______________________________________ -----Original Message----- From: vishal pranjale [mailto:[EMAIL PROTECTED]] Sent: Wednesday, January 16, 2002 11:41 AM To: [EMAIL PROTECTED] Cc: firewalls Subject: RE: how do you stop spam Hi Block your mail relay. If you are using relay in your mail server then anyone can send the mails by using your mail server IP. So select "no mail relay" Regards Vishal Pranjale Internet Security Consultant Paladion Networks www.paladionnetworks.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Matt Gorham Sent: Tuesday, January 15, 2002 1:04 AM To: [EMAIL PROTECTED] Subject: how do you stop spam Is there any way to stop or limit spam. Is there any way to track it. Please advise _______________________________________________ Firewalls mailing list [EMAIL PROTECTED] http://lists.gnac.net/mailman/listinfo/firewalls
