Drop incoming mail from specific domain.

Question

Is this possible and if so how do I configure?
I want to be able to drop incoming mail from, lets say, "@bigspammailer.com".  Is there a way to do this?  I have created an "Incoming Mail Policy" but don't know where to apply it.
What I've tried that has not worked ....
Incoming Content Filters, created a filter with Condition of "mail-from = = "@myemaildomain.com"$", and an action of "Drop".
HAT Overview, creating a Sender Group using Mail Flow Policy "BLOCKED" setting SBRS to various settings including "None".
I've grown exhausted reading through manuals. If you know of a document that directly addresses this issue (assuming it's possible) I'm not opposed to reading it.
Any help will be greatly appreciated!
Jim Mc.

Answer 1

Sender Groups can be used to block messages based on the hostname or IP of the sending machine. It does not look at who the message is "from." To block mail based on the envelope sender you need to use a Filter or the Sender Verification Exception Table.
Your example of a content filter seemed ok but after you create a filter you need to make sure that it is enabled for the incoming mail policy. Create your filter and then select Mail Policies -> Incoming Mail Policies. Under the column called Content Filters you will need to
1) turn content filters on (default is off)
2) enable the specific content filter that you just created
You can also enter it in the Sender Verficiation Exception Table. You need to enable it under your ACCEPTED policy under Mail Policies -> Mail Flow Policies. There is a radio button all the way at the bottom for the exception table. Once you have it enabled then you can select Mail Policies -> Exception Table and add @domain.com to always reject.