IMS Message Filtering for specific IPs 1

[irvmoy]

SPAM VICTIM SEEKING HELP.

I am trying to stop an open relay from delivering spam to my server. I am NOT the open relay in question.

I have tried message filtering on the open relay’s domain. This doesn’t work. The spammer is generating random sender addresses. Therefore, I need to filter the open relay’s IP.

Doc Q193437 states that I can message filter by IP using the format:

@xxx.xxx.xxx.xxx

I tried adding a known open relay as:

@64.105.93.186 and also
@064.105.093.186

I tried the second format after the first failed to filter. I used telnet to verify the open relay was still able to deliver messages to my server.

I stopped and restarted the IMS service after each change to make sure the IMS recognizes my entries. I also have \Turfdir and have set "Delete messages instead of moving to the Turf directory" just in case.

I would prefer to modify my Exch settings instead of my firewall. Anyone know why this doesn't work as documented by MS.

 

[rlee1]

In the IMS/Connections chose Specify by Host instead of the Message Filtering. Enter the IP and a sub mask of 255.255.255.0 and pick the "reject connection from this host" option. that'll stop it.