[Info-vax] Decuserve.org - Anyone know why it's down?

[JF Mezei]

On 15-01-06 10:12, Bill Gunshannon wrote:

> That is what we are talking about.  The A and PTR must match or the
> system is mis-configured or spoofing and mail should not be accepted.

Nop.  Multiple A records may point to a single PTR which means the one
PTR for an IP address may not necessarily point to the host name being
used to send email. Consider multi-homed email server that handles many
domains.