This is beyond ridiculous!
Today:
Received: from WINXBEUS26.exchange.xchg ([172.23.130.69]) by
winxhubus05.exchange.xchg ([fe80::b4d2:7ab6:7111:440c%10]) with mapi; Thu, 7
Feb 2013 23:18:36 -0500
Unable to process message. IPv6 addresses are not supported.
How difficult it is to ignore ::1 and fe80::/64?