I tried to help with the IPv4 and IPv6 selection complexity process: http://datatracker.ietf.org/doc/draft-martin-smtp-target-host-selection-ipv4-IPv6/
but not enough people with IPv6 mail experience (or interested) to make the draft progress On Wed, Jun 24, 2015 at 6:09 PM, SM <[email protected]> wrote: > Hi Kurt, > At 01:16 17-06-2015, Kurt Jaeger wrote: > >> 5.1. Locating the Target Host >> >> can be read that MX records have preference, but it explizitly avoids >> mentioning "A or AAAA" records if no MX is found. The sentence: >> >> [...] >> If an empty list of MXs is returned, >> the address is treated as if it was associated with an implicit MX >> RR, with a preference of 0, pointing to that host. >> [...] >> >> implies a A/AAAA DNS query, but does not explicitly state so. >> > > That section explains how to locate the target host. The section also has > the following: > > 'the "implicit MX" rule above applies only if there are no > MX records present' > > Regards, > -sm > > _______________________________________________ > mailop mailing list > [email protected] > http://chilli.nosignal.org/mailman/listinfo/mailop >
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