Matus UHLAR - fantomas a écrit : >> Jorge Valdes a écrit : >>> Matus UHLAR - fantomas wrote: >>> >>>>> The point of MX is to point to hosts that receive mail, if you send mail >>>>> to >>>>> someone. >>>>> >>>>> The point of PTR is to provide host name when you receive mail from >>>>> someone. >>>>> >>>>> The PTR has NOTHING to do with MX records and vice versa! >>>>> >>>> >>> So maybe there should be a new type of DNS record: MS (name suggestions >>> welcomed :) ) to let everyone know the server is an _outbound_ only mail >>> server: a server that sends mail for a domain that _may_ also receive >>> mail for the domain. This is a lot simpler than having to parse a SPF >>> record, which may also require additional DNS queries. > > On 21.10.08 19:31, mouss wrote: >> Search for RMX (Reverse Mail eXchanger). >> >> didn't go far for now. > > Yes, was kinda superseded by SPF,
In my understanding, these are different concepts. In particular, RMX doesn't hijack the TXT record, which is one of the major sins of SPF. > which may also require additional DNS > queries :) sure, but this also prevents silly decisions by poor dns caching implementations (In particular, implementations that set a reputation based on one spf lookup).
