Smtp Auth and Starttls (Chapter 5)
SMTP Service Extension for Authentication RFC http://www.ietf.org/rfc/rfc2554.txt
SMTP Service Extension for Secure SMTP over TLS http://www.ietf.org/rfc/rfc2487.txt
Stunnel home http://www.stunnel.org/
Postfix Integration
Security Sage’s SASL2 authentication and TLS encryption guide http://www.securitysage.com/guides/postfix_sasltls.html
Qmail Integration
qmail SMTP AUTH patch http://shupp.org/patches/netqmail-1.05-tls-smtpauth-20040705.patch
SMTP Authentication [Tutorial] http://www.fehcom.de/qmail/smtpauth.html
Sendmail Integration
Claus Aßmann’s Compiling STARTTLS in sendmail http://www.sendmail.org/~ca/email/tlscomp.html
Jon Fullmer’s How to Set Up SMTP AUTH http://www.jonfullmer.com/smtpauth
SMTP AUTH ...
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