Administration
Telling Exchange about (non-Exchange) SMTP servers
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…
Tag
Anti-Spam
Administration
Exchange Server 2007 exposes SCL in message headers
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…
Administration
Turning on Recipient Validation in Exchange Server 2007
The Edge Transport server role in Exchange Server 2007 performs messaging hygiene functions such as Connection Filtering, Sender & Recipient Filtering, Content Filtering, and SenderID…
Anti-spam
Texas spammer turns “antispam-activist” after million dollar settlement
In an interesting twist, Texas spammer Rylak Pitylak – listed as the world’s 4th “most prolific spammer” by Spamhaus – has turned over a new…
Administration
IMF: Archiving spam
As explained in previous posts, the Intelligent Message Filter (IMF) offers a few configuration options. The primary interface for configuring IMF is under Global Settings…
Administration
Exchange Server 2003 SP2, using SenderID? You need this hotfix!
If you’ve just upgraded to Exchange Server 2003 Service Pack 2 and have enabled Sender ID filtering, you need to apply a hotfix to prevent…
Administration
Exporting Sender Filter List
Messages from specific senders can be blocked by implementing sender filtering. Blocked senders are specified in Global Settings Message Delivery properties Sender Filtering tab (see…
Anti-spam
Exchange Server 2003 SP2 and IMF
Before you install Exchange Server 2003 SP2 you need to uninstall Intelligent Message Filter (IMF). When you do this, the settings from the SMTP virtual…
Anti-spam
Exchange Server 2003 SP2 – Connection Filtering that actually works
I was excited to find out about Connection Filtering (screenshot) in Exchange 2003 – finally I could use RBLs (real-time block lists) without having to…