Message Filtering Problem

[SupportSystems]

I am attempting to block certain domains. If I use the Connections tab, Message Filtering button and add ONE domain and restart the server (restarting just the IMS service has not worked for me) the domain is blocked ( using the syntax "@domainname.com" w/o quotes). If I add a second domain using the same syntax and restart, no messages are delivered regardless of the domain they are sent from and no messages are generated, only the NDR to the sender "Connected to xxx.xxx.xxx.xxx but sender was rejected. Remote host said: 505 Client was not authenticated
." Is there a trick to adding multiple domains to filter? I am using NT 4.0 SP6a and Exchange 5.5 SP4.

Thanks

 

[egodette]

Try leaving out the @ sign.. I had about 200 domains blocked at one time and it work ok. I then started using a SMTP blocking software package and it worked a lot better because I could choose to block mail from individuals destined for specific individuals not just block for everyone on the mail system.

 

[SupportSystems]

egodette,

I tried it w/o the "@" sign and it did not block the domain. Reading other posts in this group gave me the idea to put it in as none of the docs mention it.

Thanks though.

 

[JSAinc]

Try "#@domainname.com". The # acts as a wildcard.

 

[SupportSystems]

I got the filtering to work but I am not sure why. After reviewing all settings I could think of and trying all syntax of the domains I wanted to block, I looked at the services that were running. I noticed that the Microsoft SMTP service was running, thinking I read somewhere that Exchange runs a seperate SMTP service, I shut the Microsoft SMTP service down and rebooted. Now I enter all domains to block using syntax "@domainname.com" and its worked fine... but why I do not know!