My rule of thumb is that the initiator's service provider bears the cost of any interop problems whether they want to or not, regardless of whether they deserve to.
So for the DNS that's the recursive server. For email, outgoing MTAs have to deal with the interop fallout from anti-spam checks. For the web, browsers ditched xhtml because it made interop harder. Tony. -- f.anthony.n.finch <[email protected]> http://dotat.at/ Shannon: Southwest veering northwest, 4 or 5, occasionally 6 later. Slight or moderate, becoming moderate or rough later. Occasional drizzle. Good, occasionally poor. _______________________________________________ dns-operations mailing list [email protected] https://lists.dns-oarc.net/mailman/listinfo/dns-operations
