At 10:01 15-04-2008, Arnt Gulbrandsen wrote:
However, I think 2821bis needs a little extra text to notify
operators that they may need to upgrade or reconfigure to comply
with 2821bis. For example bs.jck.com currently refuses mail from
There's nothing wrong with that if the host is only IPv4 aware. The
IPv6-only sender would be connecting to the IPv6 relay for that
domain to send mail as follows:
Exim users can comply by disabling the sender_verify variable,
postfix users can disable reject_unknown_sender_domain, I don't know
the relevant variable for any other MTAs.
That might cause more problem than it solves.