Gmail MX over IPv6

Nick Hilliard nick at
Fri Jun 22 00:15:34 CEST 2012

On 21/06/2012 20:40, James Cloos wrote:
>>>>>> "MN" == Mansoor Nathani <jkrolan at> writes:
> MN> Since Gmail has enabled AAAA records for some of its MX hosts, my IPv4 only
> MN> machine gets the Gmail IPv6 address and attempts to deliver email. Its only
> MN> when the timeout has been reached will it try the IPv4 address.
> Your log shows that you use postfix.
> Add this:
> smtp_address_preference = ipv4

alternatively, either remove the ipv6 default route or else fix your v6
connectivity.  removing the default route will cause immediate failover to
v4.  Fixing things will ... uh, n/m.


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