On Tue, 3 Jun 2008 at 15:42 +0300, [EMAIL PROTECTED] confabulated:
On Tue, Jun 03, 2008 at 02:02:29PM +0200, Benny Pedersen wrote:
http://en.wikipedia.org/wiki/Forward_Confirmed_reverse_DNS
i know this fact, but OP question only based on reverse :/
One should always assume "reverse" means _confirmed_ reverse. I don't know
why anyone would assume otherwise by default. :) Especially if we are
talking about serious software like postfix etc.
In Postfix:
reject_unknown_reverse_client_hostname
Reject the request when the client IP address has no address->name
mapping.
reject_unknown_client_hostname
Reject the request when 1) the client IP address->name mapping fails,
2) the name->address mapping fails, or 3) the name->address mapping
does not match the client IP address.
reject_unknown_client_hostname would be what you are calling confirmed
reverse. If I were to use that, support would start getting phone calls
and customers would start getting upset.
