Monday, January 30, 2012 6:22 PM
For the past few days, we were using a RBL that was really effective in reducing spam - blackholes.five-ten-sg.com. The problem is that it is *too* effective in that it blocks legitimate emails from our vendor (Korea, japan, etc)
If we were to add the vendors' IP addresses to our IP allow list, would these be overridden by the IP Block List or would the be allowed through? I have disabled the RBL and cannnot risk having our vendor addresses blocked so, I would like to find out first before proceeding. Thanks!
Monday, January 30, 2012 9:21 PMIP Allow List will take precedence.
Wednesday, February 01, 2012 1:21 AM
IP Allow List is checked first. SMTP Clients on IP Allow List bypass the IP
Understanding Anti-Spam and Antivirus Mail Flow
hope can help you