On Sat, 26 Nov 2005 13:03:18 PST, SM said:
At 23:48 25-11-2005, Arnt Gulbrandsen wrote:
I agree with Ned: Don't fall back to A unless you know there's no MX.
According to the RFC, you should fall back to A if there is no
MX. There is no reliable way to tell that there should be a MX and
we should not fall back.
I think Arnt's meaning was "If you get a SERVFAIL trying to get the MX,
then you *don't* know there's no MX, so dropping back to an A is improper.
The message should be queued and retried later".
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