Thu Oct 30 09:07:57 EDT 2014

RTP record

SMTP error from remote mail server after initial connection:

    host mx2.comcast.net [2001:558:fe21:2a::6]: 554
    resimta-ch2-16v.sys.comcast.net comcast 2001:41d0:8:8f95::1
    Comcast requires that all mail servers must have a PTR record with
    a valid Reverse DNS entry. Currently your mail server does not
    fill that requirement. For more information, refer to:


IPv6 ptr?  Since the IPv4 PTR points at kimsufi.zwizwa.be

Reverse is set in management console but doesn't seem to work properly
for IPv6.

in exim config:
disable_ipv6 true