Anti-Spam Block List Syntax

[bernhard_m]

Does anyone have any information on what syntax is supported in the Anti-Spam Block List?
The documentation is not very elaborately on this. Just that I should add a "domain name or email address".
Is this a basic pattern matching? Are wildcards allowed? Is the match bound to the end?

Examples:

Does "acme.com" also match emails from "foo.acme.com"?
Does "acme.com" also match emails from "acme.company.net"
Does "@acme.com" also match?
Can I use "@*.acme.com" ?

Any information or recommendations on this are very welcome,

Thanks, Bernhard

[PhoneBoy]

Are you talking about the anti-spam on the gateway side? 
The answer I got back from @CheckMatesAI suggests the following:

• acme.com will only match acme.com (not foo.acme.com)
• @acme.com will only match emails from acme.com (not foo.acme.com)
• *.acme.com will match foo.acme.com (but not acme.com)
• @*.acme.com will match emails from foo.acome.com (but not acme.com)
• ? can be used for a single character wildcard

However, I can't find any other confirmation of this information.