Re: DNS restart causes lost mail

[Lorens Kockum]

On the qmail list [EMAIL PROTECTED] wrote:
>On 18 Nov 1999, (Lorens Kockum) wrote:
>> In my opinion and according to my experience, making that test a
>> 4xx error is highly recommended.
>
>No. The correct solution is to determine whether your DNS failure is
>transitive or permanent.  That's not rocket science, in fact it is trivial
>to do so.  If it's a transitive error, return a 453, if it's a permanent
>failure, return a 553.

Agreed.