Article ID: 3274, created on Nov 30, 2007, last review on Apr 18, 2012
The priority of lists is:
1. white list
2. black list
without overriding. This means if you have *@domain.com in the whitelist and some email addresses within this domain in the blacklist that all emails from those mail domain will be whitelisted. If you have email address firstname.lastname@example.org in the whitelist and *@domain.com in the blacklist that only email@example.com will be whitelisted and all other senders within domain.com will be blacklisted.