[dns-operations] about list's MX

[hua peng]

于 2014-5-26 9:42, Mark E. Jeftovic 写道:
> In the absence of an MX record the MTA should attempt delivery to the A
> record.

Thanks all.
But lists.dns-oarc.net has neither MX nor A, just a CNAME presented.
So MTA knows this?