I have a postfix email server up and running. My users have just been using webmail for the last 6 months. I have pop3 up and running now and I would like to get SMTP relaying for a few trusted I.P. address. Basically I am acting as an ISP for 3 other companies that sit behind static I.P. addresses. I do not see a need to configure a complete Cyrus-SASL authintication setup because these users will only be using the SMTP server from within these 3 companies. Would someone mind telling me the safest way to do this with postfix? Can I just safely add the 3 I.P. address of the remote sites to mynetworks?
Work with freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely, and get projects done right.