If sendmail scares you, use qmail. Qmail is extremely secure, robust, and stable. Relaying via qmail is simple too (just edit the /etc/tcp.smtp file and allow machines or subnets to relay).

Our office just got a new Windows program that when orders are recieved, sends an email confirmation to the customer. <BR><BR>We currently use our ISP's mail server which requires the "My Server ...