Re: Our first inbound email via IPv6 (was spam!)

["Livingood, Jason" <Jason_Livingood () cable comcast com>]

On 6/5/12 10:33 AM, "Jeroen Massar" <jeroen () unfix org> wrote:


> Though it can work, it used to be a really bad idea as there where a
> couple of SMTP systems (Communigate Pro being one of them I recall)
> which just failed when not seeing an "A" on an MX, this as they did not
> understand IPv6...
>
> There is bound to be other systems that are broken like that that will
> not failover to the secondary MX, as such, you might want to add an IPv4
> address there too just in case.

Thanks for the advice. You are seeing inbound records in the very first
stage. More AAAA RRs are coming. The next 24-48 hours around World IPv6
Launch will be interesting.

Jason