s/qmail Documentation
We consider at first the layout of s/qmail according to the 'Big Picture':
Figure: The s/qmail 'Big Picture (2)'
(available as PDF)
Man pages are available for the individual moduls and main components of s/qmail.
Chapters
Individual topics can be found in the following chapters:
- Before you begin ...
- s/qmail ids and limitations
- s/qmail file system usage (updated for s/qmail 4.3)
- Server Setup (done; including systemd; updated for s/qmail 4.1)
- Recipients Verification (updated)
- Authentication & Authorization (done; including SPF & SRS; updated - now including DKIM)
- Transport Layer Security (done; updated for s/qmail 4.1)
- Malware Prevention (done; updated for s/qmail 4.1)
- Local Delivery, Injection, and Forwarding (done and updated)
- Remote Delivery (done; updated for s/qmail 4.1)
- QMQ (to be done)
- Multi-tenancy (incomplete)
- Logging (done; updated for s/qmail 4.3)
- Maintenance & Diagnostics (enhanced; updated for s/qmail 4.1)
- Interface compatibility with other MTAs: Sendmail, Exim (tbd)
Other points of interest:
- SMTP Auth Tutorial (incl. s/qmail)
- SMTP and Transport Layer Security Tutorial (incl. TLS 1.3)
- Internet Survey of DANE/TLSA DNS Records Application and Use for Mail Exchanger (paper)
- The DKIM protocol and its integration into s/qmail
If you miss DJB's daemontools man pages, here they are: daemontool's man pages.