Tags: spam

Blocking of International Spam Botnets with a Postfix Plugin

This article contains an analysis and solution for blocking of international SPAM botnets with on postfix mail servers by using a postfwd plugin which analyses the sasl connects by country.   One of the most important and hardest tasks for every company that provides mail services is staying out of...
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Learn how to mitigate issues when your mail server is stressed.

Destress Your Mail Server with Postfix Troubleshooting Tips: Part 2

As I discussed in the previous article, it’s clearly important to know when your trusty mail transfer agent (MTA) is struggling to perform its duties. In this article, I’ll take a closer look at some warning signs and consider potential ways to mitigate issues when you spot that your server is...
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Learn how to process emails more efficiently and debug various MTA issues.

Destress Your Mail Server with Postfix Troubleshooting Tips: Part 1

Several mail servers are available on the market today. Some are rather confounding to configure but are super-reliable. Others are a little old school and rely on no small degree of background knowledge to get them up and running. According to the website Mail Radar, in a randomized survey of 59,...
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junk mail
Learn how Postscreen can help filter out spam.

How to Use Postfix Postscreen to Test Email for Spam: Part 1

I recently read with interest that the powerful mail transfer agent (MTA) that is Postfix has introduced a relatively new addition to its load mitigation and anti-spam arsenal. As of version 2.8, Postfix now incorporates Postscreen. In previous versions of the mail server, only one connection...
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