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List:       postfix-users
Subject:    Re: Google rejecting IPv6 mails
From:       Patrick Lists <postfix-list () puzzled ! xs4all ! nl>
Date:       2013-10-10 0:01:11
Message-ID: 5255EE47.3030309 () puzzled ! xs4all ! nl
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On 10/10/2013 01:37 AM, Wietse Venema wrote:
> James Cloos:
>> Unfortunately it is not uncommon with v6.
>>
>> I've had to whitelist a number of sites over the last year where the
>> outoing mta added a v6 address w/o a ptr.
>>
>> Mostly it appeared to be due to new v6 routes and autoconfig surprising
>> the mta admins.
>
> I wonder how this could happen, as Postfix still installs with IPv6
> turned off. Unless, of course, distributors have removed my temporary
> safety net that disables IPv6 for the time being.

Not sure if that's what you mean but a quick check of main.cf in the 
postfix 2.10.2 RPM for F19 and postfix 2.6.6 RPM for CentOS 6.4 shows:

# Enable IPv4, and IPv6 if supported
inet_protocols = all

Regards,
Patrick
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