On Wed, Jan 20, 2010 at 01:05:01PM +0000, Jaroslaw Grzabel wrote: > Ralf Hildebrandt wrote: > > Use an access(5) map on the client: > > > > check_client_access hash:/etc/postfix/nice_reject > > > > with: > > > > unknown 550 5.1.2 Your reverse DNS entries are off > > > > > Thank you for that Ralf. Do you know if may I operate on any variables ? > I need to have a message like "550 Fix your reverse DNS for IP > $IP_ADDRESS or use your ISP server. Please see: website to know more."
You don't really need that variable. The hostname/IP is already included in the rejection message going out, if you use check_client_access. For example: 550 5.1.1 <unknown[1.2.3.4]> Client host rejected: "Fix your reverse DNS..."