It's rumoured that Steve Atkins once said:
> On Mon, May 17, 2004 at 05:01:05PM +0100, Dave Page wrote:
>
>> > a@foo.bar is syntactically valid. a@foo.invalid is
>> > syntactically valid, but should be immediately rejected.
>>
>> I disagree - just because the database server cannot verify the the
>> existence of a domain does not mean that it isn't valid. I think only
>> addresses that are syntactically incorrect should be rejected.
>
> I think you're missing the point. Go and take a glance at RFC 2606 -
> it's a BCP which defines the .test, .invalid, .example and .localhost
> TLDs.
Ahh, yes - clearly I was missing the point :-)
Regards, Dave.