[geeks] simple DNS / nslookup question

[der Mouse]

>> What's wrong with fallback-to-address?
> To be honest, I'm not entirely sure.  I do know it's not regarded as
> a Good Thing amongst at least some mail standards fascists.

Very little is.

> Have you any pointers to the spec that indicates fallback-to-address
> ? (just curious)

RFC2821 section 5, the first paragraph especially.

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