Well, To determine you are an opne relay, there are a couple of things you can do Google for open relay check >From a remote site send an email from another domain to another domain through your mail server Check your settings agains the manual
HTH Regards, Serge Fonville On Thu, Aug 20, 2009 at 2:54 PM, Israel Garcia<igalva...@gmail.com> wrote: > My scenario: > > I have a lot of postfix servers, each one, use to sent mail directly > to internet, so It's difficult to monitor them. > What I want? > > Put all postfix's of my servers to send all their external mail to an > smarthost server in my network. I mean, the smarthost must receive > ONLY mail from my servers and relay them mail to internet. Remember I > have a lot of different servers and domains so I don't know how to > configure this smarthost becasuse in some way it's becoming an open > relay. > > My question: > How can I setup a secure smarthost to my network that receive mail > ONLY from my servers and relay all mail directly to Internet? Include > some configuration if possible. > > regards, > Israel. >
