Anti-spam
Enabled by default: SMTP Tarpit in Exchange Server 2007
From a recent discussion, and something I’ve been wanting to post about for a while: SMTP tarpitting is enabled by default on Receive Connectors in…
Category
Transport
Administration
How To Allow Relaying in Exchange 2010 and Exchange 2007
In Exchange Server 2003, you can allow anonymous SMTP hosts to relay mail by adding their IP address(es) in SMTP Virtual Server Properties | Access…
Exchange 2007
Message Tracking from the command line in Exchange 2010 and Exchange 2007
I’ve forever envied folks (including some colleagues— you know who you are… ) on the Linux/Unix side of things who were able to parse text…
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
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
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…
Administration
Troubleshooting IMF: Important performance counter
Earlier today I saw some strange behavior with Intelligent Message Filter (IMF) v2. Incoming internet mail wasn’t getting scanned by IMF. Outlook did not show…
Administration
Creating an additional SMTP Virtual Server in a EVS
Creating an additional SMTP Virtual Server in a non-clustered environment is pretty straightforward. The same task is a little more complicated in a clustered environment.…
Administration
Sending mail from telnet session
This procedure is commonly used to troubleshoot SMTP hosts. In combination with an nslookup query for MX records for a domain (listed after this) you…
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…