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Sendmail is a free/open-source email server that handles both relay and delivery. The documentation is very detailed but also unclear on many critical points.
If you want to use Sendmail from the command-line as a way of generating test messages, see Postfix/fixing or 5 Ways to Send Email From Linux Command Line. (The latter method works even when Sendmail is actually Postfix.)
- /features are invoked and configured in the sendmail.mc file
- /files: files used by sendmail
- /macros are used in various places
- /procmail: still trying to figure out how to get these to work together
- /SSL: configuring secure connections
- home page redirects here
- Introduction (configuration)
- OSTYPE: documents a lot of config directives. Is "OSTYPE" a config-file section, or what?
- Features (configuration thereof)
- SMTP authorization
- Anti-Spam Configuration Control
- IBM AIX: not sure if this is standard sendmail
- How do I use Sendmail?
- Linux Server How To - Configure Sendmail
- Linux Server How To - Filtering Spam on a Sendmail Mail Server: suggests installing SpamAssassin, but doesn't say how to get it working with sendmail
To enable sendmail to use STARTTLS, you need to: 1) Add this line to /etc/mail/sendmail.mc and optionally to /etc/mail/submit.mc: include(`/etc/mail/tls/starttls.m4')dnl 2) Run sendmailconfig 3) Restart sendmail