>>> mail.ietf.org. is ietf.org., so you can remove your MX records for >>> ietf.org. This should cut down on spam since a lot of spambots >>> will skip over domains whose MX list cannot be obtained. Real >>> mailers will of course fall back to A/AAAA as per RFC 2821/5321. A >>> few hosts will have trouble, but very, very few indeed, and that >>> isn't your (our?) fault. I checked with some people who run mail for a lot of domains, and they assure me that spambots will try to deliver to the A record even if there is an MX. Where did you get the idea that not having an MX offers protection from spambots? R's, John _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf