July 2017
Intermediate to advanced
648 pages
31h 9m
English
book
Microsoft Exchange Server 2016 PowerShell Cookbook - Fourth Edition
by Jonas Andersson, Nuno Mota, Mike Pfeiffer
Content preview from Microsoft Exchange Server 2016 PowerShell Cookbook - Fourth Edition
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Implementing a header firewall
When messages are passed from one server to another through SMTP, Exchange Edge, and Mailbox servers, add custom X-Header fields are added to the message header. These headers can contain a variety of information, such as mail server IP addresses, spam confidence levels (SCL), content filtering results, and rule processing statuses. Header firewalls are used to remove these custom X-Header fields so that unauthorized sources cannot obtain detailed information about your messaging environment. In this recipe, you'll learn how to use the Exchange Management Shell to implement a header firewall that prevents the disclosure of internal information sent to an external source.
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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.