27 Dec
2005
27 Dec
'05
10:11 a.m.
* Marco d'Itri:
On Dec 21, Stig Venaas <Stig.Venaas@uninett.no> wrote:
I know several sites that have both A and AAAA for all MXs. It doesn't sound safe to me, but I assume it can't be that problematic then...?
In my experience (linux.it and other domains, IIRC since three years) a single MX record with A + AAAA records has not caused deliverability errors for incoming nor for outgoing mail. The same applies to a domain with A and AAAA records and no explicit MX.
Try to get logs from master.debian.org. I'm pretty sure they will show some bounces. bugs.debian.org (= spohr.debian.org) probably has similar issues. Just because you don't know about these bounces doesn't mean they don't exist. 8-)