Trend Micro Email Security allows you to configure the following to filter senders of incoming messages:
Sender filter settings
Specifies the type of sender addresses collected to match the approved and blocked sender lists.
Specifies whether to insert an X-Header in the message header for email messages matching approved senders.
Specifies the senders to allow using specific email addresses or entire domains.
Specifies the senders to block using specific email addresses or entire domains.