Exchange 5.5 Filtering Subdomains

[procend]

First, thanks for all of the helpful tips on configuring Message Filtering in Exchange 5.5. But I have a problem that I haven't seen addressed specifically in the forums.

One of the spammer tricks is to send e-mails using generated addresses to make them harder to block. I frequently get spam mail with domains like "@123.abc.com" and "@xyz.abc.com". Will filtering for "@abc.com" cover these subdomains as well? Can I enter "@*.abc.com" in the Message Filtering address box?

I'd hate to have to keep running to the server every time I get a new permutation of a spammer's address.

Any help is greatly appreciated!

 

[kwgm]

from my experience, simply listing @abc, will not block a subdomain xyz.abc.com

 

[scottncsl]

Entering "#@abc.com" should block everything coming from abc.com. The "#" is a wildcard character.

 

[brontosaurus]

Allegedly:

@domain.com = blocks domain.com and all it's subdomains

#@domain.com = blocks just domain.com

I know, sometimes it doesn't seem to work...but the above is how it was intended.

 

[N0ktar]

I agree with brontosaurus, @domain.com blocks also all subdomains. I have seen no exceptions to this rule on my servers.