"Tony Finch" wrote: > I doubt that it makes sense to accept email from > [EMAIL PROTECTED] on a system that can only > communicate with IPv4 addresses.
In stark contrast to Ned's view I think that you MUST reject such mails - unless you can guarantee delivery without auto-response (no NDR, no DSN, no MDN, no vacation, no forward, in essence an empty reverse-path, near to rewrite MAIL FROM:<>) Same idea as in EAI, after a reject "the sender can make another plan". After accepting it the IPv6-only mail vanished in a black hole for all non-trivial cases. Frank
