Authorized Relaying

Authorized Relaying involvers methods of authenticating that a user is really entitled to use a mail server.

• Authorized Relaying Principles
• SMTP-Auth
• Pop-before-SMTP
• Whoson

Related

• Open Relays
• Outbound Spam
• Traceability Best Practice

Authorized Relaying Principles

Email Submission Between Independent Networks (draft) - mipassoc.org/spamops/draft-hutzler-spamops-04.html - version 05 in text format

SMTP-Auth

SMTP-Auth is a system to authenticate SMTP clients to servers.

• SMTP-Auth Outline
• SMTP-Auth Server Implemenations
• SMTP-Auth Client Implementations

Related

• Preventing SMTP AUTH abuse with Microsoft Exchange

SMTP-Auth Outline

SMTP Service Extension for Authentication - www.faqs.org/rfcs/rfc2554.html
ietf-sasl - www.imc.org/ietf-sasl/

SMTP-Auth for Servers

Server support for SMTP AUTH - members.elysium.pl/brush/smtp-auth/server.html
SASL Implementations (Servers) - www.sendmail.org/~ca/email/mel/SASL_ServerRef.html
SASL Implementations (Servers) - www.melnikov.ca/mel/devel/SASL_ServerRef.html
smpauth proxy - www.pc-tools.net/unix/smtpauth/ - Unix

• SMTP-Auth for Exim
• SMTP-Auth for Sendmail
• SMTP-Auth for QMail
• SMTP-Auth for Postfix
• SMTP-Auth for smtpprox

SMTP-Auth for Exim

Exim - www.exim.org/exim-html-3.30/doc/html/spec_35.html

SMTP-Auth for Sendmail

Sendmail - www.sendmail.org/~ca/email/auth.html
Sendmail - www.joreybump.com/code/howto/smtpauth.html

SMTP-Auth for QMail

QMail - members.elysium.pl/brush/qmail-smtpd-auth/
QMail - www.ingorohloff.de/soft/serialmail-auth.patch
QMail - www1.cuni.cz/~vhor/qmail/smtpauth-en.html

SMTP-Auth for Postfix

Postfix - postfix.state-of-mind.de/patrick.koetter/smtpauth/

SMTP-Auth for smtpprox

SMTP AUTH for smtpprox - bent.latency.net/smtpprox/smtpauthprox

SMTP-Auth for Clients

Clients supporting SMTP AUTH - members.elysium.pl/brush/smtp-auth/client.html
SASL Implementations (Clients) - www.melnikov.ca/mel/devel/SASL_ClientRef.html

Pop-before-SMTP

• Pop-before-SMTP in general
• Pop-before-SMTP for Postfix
• Pop-before-SMTP for Sendmail
• Pop-before-SMTP for QMail

Pop-before-SMTP in general

POP before SMTP - www.iecc.com/pop-before-smtp.html, spam.abuse.net/adminhelp/smPbS.shtml
Perl: Pop-before-SMTP Home - popbsmtp.sourceforge.net/

Pop-before-SMTP for Postfix

pop-before-smtp - www.bsdnewsletter.com/Software/Servers/SMTP_Mail/POP3_Authenticated_Relaying/pop-before-smtp
pop-before-smtp for Postfix - www.arschkrebs.de/postfix/postfix_pop-before-smtp_en.shtml
pop-before-smtp in C - www.bluelavalamp.net/pop-before-smtp/
DRAC support in Postfix - www.arschkrebs.de/postfix/postfix_drac.shtml
smtp-after-popd - www.boutell.com/smtp-after-popd/

Pop-before-SMTP for Sendmail

P O P R E L A Y - poprelay.sourceforge.net/
SMTP after POP - www.koblenz-net.de/~horn/smtp_after_pop/doc/
SAPD - sapd.sourceforge.net/
Dynamic Relay Authorization Control (DRAC) - mail.cc.umanitoba.ca/drac/

Pop-before-SMTP for QMail

smtp-poplock - www.davideous.com/smtp-poplock/
open-smtp3 - www.qmail.org/open-smtp3.tar.gz
relay-ctrl - untroubled.org/relay-ctrl/

“Whoson” protocol

"Whoson" protocol - whoson.sourceforge.net/