martin f krafft: > Quoting "Wietse Venema", who wrote on 2019-10-06 at 19:13 Uhr -0400: > >Perhaps the SMTP client IP address 2001:db8:bad::cafe:: has no PTR > >record (or the name does not resolve to 2001:db8:bad::cafe::). > > Good point, but the address has a PTR record to a name with an AAAA > record pointing to the address.
The form "2001:db8:bad::cafe::" does not look kosher to me.
Wietse
