I'm trying to configure a transport rule in Exchange 2013 to block all emails from the TLD .eu We get nothing but a TON of spam that is not caught by the Exchange 2013 spam filter, and it's always from a different domain. I have seen guides for 2007 and 2010, but nothing for 2013.
Do I just use the rule "The sender domain is" and use the value ".eu"? I just want to verify this is the correct way to block a TLD.