Using SPF Records To Build Objects 2009-10-16 ·4 min readMy biggest complain about modern firewalls is their lack of the ability to create rules based on URLs or HTTP streams; you have to open access between IP addresses. Yes, I know there are other means …_netblockasadigdnsfwsmgooglehttpmailobjectobject-grouppixrecordssecurityspftxt