21 Dec
2005
21 Dec
'05
6:30 p.m.
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.
(I had many more troubles from broken CPMTA installs, which for some unknown reason in Italy are often configured by default to not deliver mail to domains without a MX record.) -- ciao, Marco