> diversion. in short: the original claim was baseless. No mailserver is > broken for refusing messages from sites that have no in-addr.arpa in place.
Please. "No mailserver is broken for refusing messages from sites run by [ethnic group]." "No mailserver is broken for refusing messages from sites with an even IP address." "No mailserver is broken for refusing messages delievered by air-mail." There is no guideline saying that servers MUST refuse mail from sites with no in-addr.arpa. Therefore your stance is on shaky ground -- you are going above and beyond the relevant RFCs that the protocol relies on to achieve a goal. "Embrace and extend," anyone? You don't mind rejecting mail based on lack of in-addr.arpa. I do. Who cares? When your customers come to you and say that they aren't getting mail and you ask the other ISP to fix their problem and they won't, who's at fault? You are in this case, because you are going above and beyond what the RFC dictates as minimum requirements. There is nothing stating you can't have a nameserver without a valid reverse lookup, and if you are expecting the world to follow you, you have delusions of grandeur. Whether that is acceptable to you or not is your (and your customer's) worry, not mine. I am under no obligation to correct my "mistake" simply because you don't like it and have configured your servers not to like it. Regards, Andrew