Sendmail virus protection

Unlike other Spam filtering systems and services the SpamWall is a dedicated solution with it's own dedicated hardware resources and an IP address which is completely dedicated to your system alone, providing unmatched control and security.

A SpamWall protecting your mail server and network helps to improve email user experience, increase customer retention and saves on bandwidth, administrative and support costs. Positioned "in front" of your Sendmail server, SpamWall's Sendmail Spam filter provides an integrated Anti-Spam and Anti-Virus solution offering complete email protection for Sendmail at the "network perimeter" level, before unwanted or potentially dangerous and costly email reaches your network or mail server.

SpamWall's Sendmail Spam filter is compatible with all versions of Sendmail and email clients such as Outlook etc. No changes are needed to your existing mail server or network setup, there is no hardware to purchase or maintain, no software to install and configure, no per-domain, per-user, or per-mailbox fees or charges to pay. Sendmail server related security problems should be sent to:. Replace YYYY with the current year, e.

This address is only for reporting security problems in sendmail. Please do not use this address to report problems that are not related to the security of the sendmail server. Questions about avoiding spam risk , how to set up your own certificate authorities, etc. These addresses are for contributing patches or reporting problems about V8 sendmail. The members of these lists do not have the resources to support vendor versions.

If you have a question about sendmail, then please post it to the Usenet group comp. This newsgroup is dedicated to sendmail. Please make sure you check the usual resources before posting and follow the netiquette. E-mail addresses to contact sendmail. The Domain Keys Identified Mail DKIM Internet standard enables email senders to digitally sign their messages so that receivers can verify that those messages have not been forged.

The protocol was developed through the cooperation of Sendmail, Cisco Systems and Yahoo! MailScanner provides the mechanism for moving messages from one queue to another. Let me stop and explain why I think this is an excellent choice in architecture.

Other virus scanners integrate with the mailer to scan messages as they are received. While this allows for less latency in delivery times, the administrators have no flow control. Should a flood of inbound messages roll in, your server will try valiantly to scan each and every one, driving up the system load until messages are ultimately rejected. Other scanners pass the message from your MTA to the scanner, but "lose" the message if the scanner process dies or is otherwise "hung". The queue architecture nearly guarantees zero message loss, leaving a worst-case scenario of message delay.

Scanning messages in batches, instead of as they come in, also allows you to more efficiently manage your system resources.

Installing MailScanner is a relatively painless process. You need a working MTA, sendmail preferred, exim supported, otherwise you are on your own. In my installations, and the example below, I use Sendmail 8.