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Re: BCP for handling DNS SERVFAIL results

2005-11-26 14:18:49

Hi Arnt,
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.