[please don't top-post. thanks.] On 4/18/2013 11:09 AM, Lucas van Braam van Vloten wrote: > Hi, > Thanks for your replies. I know how to allow relay by its IP address > but I'm just afraid that it would be easy to fake an up address and > use my server as a spam relay.
While it's easy enough to spoof single IP packets, it's far more difficult to spoof a whole SMTP conversation. Listing an IP in mynetworks is safe as long as you trust everybody at that IP, for some value of "trust". > I would prefer to combine this with > some form of authentication. Would you happen to know a good manual > for setting up SASL authentication or a client certificate? http://www.postfix.org/SASL_README.html http://www.postfix.org/TLS_README.html If you need more detailed instructions, ask for help on a forum specific to your OS. -- Noel Jones
