Sending mail with *gasp* sendmail

In early 2007, I interviewed for a system adminsitration position with a firm in Vienna. I was asked if I had experience with Postfix, the mail transport agent (MTA) system written by Wietse Venema. When I told the interviewers, which included technical staff, that I was not, but quite experienced with sendmail, the looks in their eyes told me my chances of landing a job was now less than the square root of a negative number. Their gasps hinted at a sentiment like, “What unix administrator in his right mind uses sendmail??” Well, I’m here to set the record straight and provide a meaningful how-to. Given that most UNIX hosts only need only a Mail Sending Program (MSP) to send via SMTP, having a trimmed sendmail MSP-only configuration is a lot more useful than a bloated postfix one. Read more