Is there an outbound-only mail only list?

We have mailing lists to our customers that are getting spammed because the lists can also receive mail (it goes to the internet addresses listed in the group). Is there a way to set up a mail only list of internet email addresses so that we can send messages but not receive any on this mail only list?

Subject: Is there an outbound-only mail only list?

Hi Pam,

There is a very complicated way to achieve this in the configuration document. I will propose to do something more simple. You can create a rule to refuse the messages to this specific address in the same configuration document for the relevan server.

Regards,

Daniel