Two paths diverged in a wood. One was worn smooth by years of easy traffic. The other asked more of you. More effort, more intention, more thought. Most travelers took…
Like many of my posts, this one also starts with “By default,… “. Like many folks, I’m always curious about the defaults used for almost…
If you’re using Exchange Server 2007 in a topology with an Edge Transport server, the anti-spam agents – Connection Filtering, Content Filter Hub Transport node…
If you’ve been keeping track of spam issues and RBLs, you probably took notice of the recent order by an Illinois court against leading RBL…
Windows IT Pro magazine recently held a webinar titled “How to Simplify Exchange Troubleshooting – An In-Depth Look at Tools” (access the archived version here…
RFC 2821 specifies how address literals can be used to reach recipients – particularly useful when DNS resolution doesn’t work for a particular domain or…
So far we’ve known that Exchange Server 2003’s content filter – the Intelligent Message Filter (IMF), uses Gateway and Store thresholds and (Gateway) action that…
RFC 2821 requires a SMTP host to send non-delivery report if a message is accepted but cannot be delivered, and the reverse path is *not…
If you don’t like the font choices (or lack thereof) in Windows console, or want Consolas (a new font available by installing IE7 or Windows…
Fired up the console (command prompt) in Windows Vista and can’t telnet to smtp or use telnet at all for that matter? Just noticed this…
For anti-spam agents like IP Block List providers (aka DNSBLs/RBLs), and Sender ID, it is important to know about which non-Exchange SMTP servers receive inbound…
Paul Thurrott over at Windows IT Pro mag is gung ho about Windows Vista now. Amazingly, his stand has changed from (frequently and highly) critical…
Exchange Server 2003’s Intelligent Message Filter (IMF) assigns a SCL— a value that indicates the probability of a message being spam – to every message…