post...@ptld.com wrote:
> Please RTFM Postfix documentation. If it does not mention IP addresses
> then it does not use the IP addres,
I did read the manual which says:
"Reject the request when the HELO or EHLO hostname has no DNS A or MX
record."
Good. Does it mention IP addresses? No it doesn't. Therefore
it doesn't use them.
Our brains obviously work different. You keep saying it doesn't mention
IP addresses when it clearly says "DNS A record". A DNS A records *IS*
an IP address so the manual DOES mention IP addresses. I would like to
understand your way of thinking, how is that not mentioning IP addresses
to you?
It (potentially) *retrieves* an IP address, but it does not *use* the IP
address.
To put it another way, the *contents* of the DNS lookup(s) are
irrelevant, only whether the lookup returned a value or NXDOMAIN.
Other restrictions may use that resulting IP at other points in the
processing.
-kgd
