From Admin-SIG
[edit]
MTAs
- sendmail is the old warhorse, often preferred for enterprize class systems
- postfix is much easier to install, and designed for securiity. Good for small and simple systems, up to fairly large enterprizes. Might be a little less efficient (more file copies, etc.) than sendmail.
- exim Standard with Debian. I don't know why. I prefer postfix.
- ssmtp excellent send-only SMTP server proxy for machines which do not RECEIVE mail.
