Each time someone responds to the email challenge, I recieve a notice via an email from MailFrontier Challenge Response. I don't wish to receive these, so can I use the ZA Options to block the sender or company without interfering with the challenge/response process?

If so, is it best to block the sender or the company?

Thank you very much.

Operating System:Windows XP Pro
Product Name:ZoneAlarm Internet Security Suite
Software Version:6.1