November 2009
Beginner
376 pages
8h 49m
English
book
Linux Email
by Ian Haycox, Ralf Hildebrandt, David Rusenko, Alistair McDonald, Patrick Ben Koetter, Carl Taylor, Magnus Back
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System-wide rules
Now that we have covered all the basics of setting up rules, analyzing e-mails, and generally seeing how all of the processing operations interact, we will look through a couple of examples for system-wide filtering, testing, and operations.
Removing executables
In Chapter 9, we will see how to integrate a complete virus checking system into the Postfix mail architecture. This will perform accurate virus signature recognition and add suitable flags to the mail headers to indicate if a virus is present in the mail. However, if it is not possible to set up such a system, this rule will provide an alternative but more brutal approach to block all e-mails with executable attachments.
If you place the following in /etc/procmailrc
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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.