dhunt wrote:
I have the system setup with postfix instead of sendmail. The problem I
have is trying to figure out where to put the list of IP numbers where it will allow them relay to the outside world.
I know there is supposed to be a file created or written to but it keeps
running me in circles.
/etc/postfix/access ?
You just made the improper conclusion that I know anything about the subject at hand. Shame on you(grin)
;-)
I know there is a way to only allow certain email address, users, or outside ip numbers or blocks of ips to be able to relay mail through the Postfix system. I just haven't found it myself. So treat me like I am an idiot (which I just very well may be).
Want you to permit relaying from outside, or only from inside ? Configure Postfix's smtpd only to listen on the interfaces which are really necessary (inet_interfaces != all). Use authentification for relaying (smtp-auth (sasl) or pop-before-smtp). Hmm, /etc/postfix/access is a very insecure way from outside, because it's not very hard to fake IPs. -- Andreas