[RFCI-Discuss] DSN listing of secureserver.net

[Alex van den Bogaerdt]

On Sun, Oct 29, 2006 at 11:11:06AM -0500, Alan Brown wrote:

> > I think IP addresses are noted because names are unreliable, not
> > because people like redundant data.

[snip]

> Thankfully there are almost no such hosts left on the public Internet
> and the lessons learnt from HELO and rDNS forgeries in the past have
> resulted in the better header stamping we now have.

And I do agree this is necessary.

My point: from the examples in rfc821 it is clear that the parameter
to helo is a hostname (called a domain in rfc821), not just a random
string that may or may not mean something.

Alex