Administration
IMF: Where’s the whitelist?
Another frequently asked question – asked frequently enough to make its way here. Does the Intelligent Message Filter (IMF) v1/v2 in Exchange 2003 provide any…
Category
Anti-spam
Anti-spam
Update: Manually removing IMF v1
Scott Schnoll has an update regarding the recent post Intelligent Message Filter (IMF) v1 download removed from microsoft.com, and the issue of not being able…
Anti-spam
Intelligent Message Filter (IMF) v1 download removed from microsoft.com
A newsgroup poster recently informed that Microsoft has removed Intelligent Message Filter (IMF) v1 download from the IMF downloads page. IMF v1 was a separate…
Anti-spam
Microsoft opens up SenderID
Microsoft announced today it’s putting its SenderID technology under its Open Specification Promise program. This allows anyone to create products or services using SenderID technology.…
Administration
Install anti-spam agents on Hub Transport server
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…
Anti-spam
Spamhaus, the E360Insight lawsuit and the future of RBLs
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…
Administration
IMF: Gateway thresholds per server
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…
Administration
Disabling NDRs
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…
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…
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…