News
Computerworld: The deal on the Windows DNS bug
The still unpatched Windows DNS Server bug has been the topic of many a security discussions during the past few days. If you’re running your…
Category
Security
Administration
RFC 2821, HELO again: Validating the HELO/EHLO domain
RFCs 2821 and 1869 specify the format of HELO/EHLO commands issued by a SMTP client to initiate a SMTP session. RFC 2821 on HELO/EHLO command:…
Administration
Exchange Server 2007: Managing And Filtering Anti-Spam Agent Logs
Exchange 2007 includes a number of anti-spam agents to filter spam. The anti-spam agents log their actions in (anti-spam) agent logs. The default agent log…
Archiving & Compliance
Email Archiving and Compliance: Learning from email issues that plague the White House
Over the weekend, Wall Street Journal reported “White House Probes More Lost Emails” (external links do not work, WSJ.com requires subscription to read this article).…
Apple
Internetnews.com: Surprise, Microsoft Listed as Most Secure OS!
Microsoft has no dearth of critics as far as security goes, particularly from the open source bandwagon. Apple’s commercials certainly show no mercy when talking…
Exchange 2007
Locating Exchange Server 2007 CAS role in the perimeter?
Where should you locate Exchange Server 2007 servers with the Client Access Server (CAS) role? Is it more secure to locate them in perimeter network…
Active Directory
HOW TO: Assign SendAs right using Exchange shell
In Exchange Server 2007 (and Exchange 2010), recipients are managed from the Exchange Management Console (EMC) or Exchange Management Shell (aka the Shell). EMC does…
Administration
Exchange 2007 Content Filter: How to move messages to Junk Mail folder
You’ve setup Exchange Server 2007, and configured the shiny new Content Filter agent (CFA), which is more than just a rewrite of the equally loved…
Exchange 2007
Configuring firewalls and name resolution for Edge Transport servers
If you’re planning to deploy the Edge Transport server role in a perimeter network (aka “DMZ”), here are the ports you’ll need to open: Inbound:From…
Administration
A Late New Year’s Resolution: Do Not Resolve Anonymous Senders
It’s probably a little late to make another New Year’s resolution, but I’ll try to convince you to make one nevertheless. By default, when an…