On Wednesday, May 06, 2015 05:17:12 PM Tobi wrote: > @Scott > > thanks for putting me into the right direction :-) > The answer for spf1.amazon.com TXT is indeed too big for UDP. So the > query was retried in TCP mode. > But the stupid admin (aka myself) forgot that he disabled tcp on the > mailservers local resolvers (unbound). After enabling tcp mode for > unbound the queries for spf1.amazon.com TXT were properly answered properly. > Amazon did not retry yet, but I'm sure that this solved the problem. > Great. Feel free to throw RFC 7208 Section 3.4 (Record Size) at them. The SHOULD fit in a UDP packet is there for a reason.
Scott K
