April 2012
Intermediate to advanced
576 pages
15h 40m
English
Content preview from Email Security with Cisco IronPortBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 3. ESA Email Pipeline
In this chapter, you will learn the following:
• The full email-processing pipeline for all accepted messages
• How the system performs connection handling and rate limiting
• Operations performed in the ESA work queue
• How to configure options for acceptance and delivery of messages
Simple Mail Transfer Protocol (SMTP) connections and email messages handled by the Email Security Appliance (ESA) move from connection acceptance to SMTP conversation, to message acceptance, and then to filtering and delivery in a step-by-step process known as the email security pipeline. The pipeline is important because the fixed order of certain steps dictates configuration and architecture, and the flexibility of other steps means ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.