Rule from domain address not working

I am using eM Client version 7.1.3.   I have rules to move incoming mail to the junk folder that have a from addresses onmicrosoft.com and @.onmicrosoft.com.  The rule is active.  It does not work even if I run it manually.   I am suddenly getting swamped with junk mail and this wild card function would be great if it worked.   Reading other response, I understand this is supposed to work.  Can you help me?    Thanks

I solved my problem by adding a rule After message has been received
with ‘Return-Path: onmicrosoft.com’ found in header
move to Junk E-mail

You can also just blacklist the domain.

Thanks but I needed a way to blacklist everything coming from onmicosoft.com because the spammers were using a new prefixed domain on each email and @.onmicrosoft.com in the blacklist did not work for some reason.

Yes, this rule works really nicely. Overcomes the limitation of not allowing wildcards for sub-domains. You can drop the .com then if they start sending from other domain extensions it will also work.

So: Return-Path: onmicrosoft

I am having problems with junk mail that is using the same domain extension - .date.
I want to setup a rule for the extension .date only, since the domain name is being changed for each mail.
How can I do this in emClient ?

Create a new rule on messages received. Choose With words found in the header. Type From: .date as the new word.

This will move ALL emails with .date in the from address or name to Junk. So bill.date@gmail.com will end up there also. You could try .date> which might narrow it down to the end of the address.