postfix: postfix (alternative to the widely-used Sendmail program)
postfix: 
postfix: Postfix attempts to be fast, easy to administer, and secure, while at
postfix: the same time being sendmail compatible enough to not upset existing
postfix: users. Thus, the outside has a sendmail-ish flavor, but the inside is
postfix: completely different.
postfix: 
postfix: Make sure you read the documentation about how to set this up,
postfix: especially the info about creating postfix user and groups in
postfix: /usr/doc/postfix-2.9.4/README.Slackware
postfix: