Hi Arnt, At 11:32 15-04-2008, Arnt Gulbrandsen wrote:
Yes, and the IPv6-only relay would then connect to bs.jck.com and issuing the conversation that ends with 550.
Not necessarily. That host may apply a different policy for mail coming through the other MX hosts. Otherwise, it would cause backscatter. BTW, the problem may be applicable to IPv4 as well.
Regards,-sm
