On Thu, Nov 02, 2000 at 01:17:21PM +0100, Peter Palfrader wrote: > It is. For a (not so) small set of hosts. Assuming your box is 62.1.2.3 you > will be an open relay for the entire _class_A_ net 62.
Unfortunately not just for this. > If you do not set mynetworks postfix guesses it from the interfaces and allows > all hosts on the classful subnets of those interfaces to relay through you. My main.cf contains: mynetworks=127.0.0.1/8 but still I was able to send mail using From: and To: addresses on different networks. Michael -- Michael Meskes Michael@Fam-Meskes.De Go SF 49ers! Go Rhein Fire! Use Debian GNU/Linux! Use PostgreSQL!