Gentoo Archives: gentoo-security

From: Joerg Mertin <smurphy@××××××.org>
To: gentoo-security@l.g.o
Subject: Re: [gentoo-security] postfix and SASL
Date: Wed, 05 Oct 2005 13:26:13
Message-Id: 31588.80.146.243.75.1128518122.squirrel@stargate.solsys.org
In Reply to: Re: [gentoo-security] postfix and SASL by Joe Strusz
OK - as this seem to be quite difficutl for many - here my configuration
of postfix - TLS and SASL parts only:

## TLS
#  Transport Layer Security
#
smtpd_use_tls = yes
smtpd_tls_auth_only = yes
smtpd_tls_key_file = /etc/ssl/postfix/stargate.solsys.org.key
smtpd_tls_cert_file = /etc/ssl/postfix/stargate.solsys.org.crt
smtpd_tls_CAfile = /etc/ssl/postfix/stargate.solsys.org.pem
smtpd_tls_loglevel = 3
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom

# SASL SUPPORT FOR CLIENTS
#
# The following options set parameters needed by Postfix to enable
# Cyrus-SASL support for authentication of mail clients.
#
broken_sasl_auth_clients = yes
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_sasl_local_domain =


This setup works here for 2 Years ...
Cheers

Joerg


<quote who="Joe Strusz">
> Whenever i telnet to port 25, and issue the AUTH PLAIN command i receive > this: > > 538: Encryption required for requested authentication mechanism. > > What does this mean? > > I could really use some help on this... its been bugging me for weeks now. > > Also, I do have smtpd_tls_auth_only = yes line > > > Please help > > blargh. > > Your fellow befumbled gentoo user. > > > >>X-Original-To: jstrusz@×××××.com >>Delivered-To: jstrusz@×××××.com >>Delivered-To: <gentoo-security@l.g.o> >>Date: Wed, 05 Oct 2005 12:36:01 +0100 >>From: Jonathan Wright <mail@×××××××××.uk> >>User-Agent: Mozilla Thunderbird 1.0.6 (X11/20050822) >>X-Accept-Language: en-us, en >>List-Post: <mailto:gentoo-security@l.g.o> >>List-Help: <mailto:gentoo-security+help@g.o> >>List-Unsubscribe: <mailto:gentoo-security+unsubscribe@g.o> >>List-Subscribe: <mailto:gentoo-security+subscribe@g.o> >>List-Id: Gentoo Linux mail <gentoo-security.gentoo.org> >>X-BeenThere: gentoo-security@g.o >>Reply-To: gentoo-security@l.g.o >>To: gentoo-security@l.g.o >>Subject: Re: [gentoo-security] postfix and SASL >>X-Virus-Scanned: This message was scanned for viruses by ClamAV. >>X-Spam-Status: No, hits=-2.599 tagged_above=-100 required=6.5 >> tests=BAYES_00 >>X-Spam-Level: >> >>Benjamin A'Lee wrote: >>>>Not sure but: why on port 25 and not on 465 ? >>>I don't think it actually matters which port; IIRC it just enables >>>STARTTLS by default on 465. >> >>Port 465 is for SSL (i.e. secure communication before any >>application data is transferred) and Port 25 accepts TLS (where the >>data is secured once both parties accept, however, application data >>transfer has occurred). >> >>Anyway, with telnet you can't talk on port 465 :) >> >> > I have confirmed postfix is indeed compiled with SASL support. And i >> > have TLS working great. However when i telnet to port 25 and issue >> the >> > ehlo command, i do receive the starttls etc... yet no AUTH PLAIN >> > lines... >> >>Depending on the configuration, AUTH PLAIN can either be disabled, >>or more likely, it's only send should STARTTLS be issued. I have the >>following lines in my main.cf: >> >>-- cut ----------------------------------------- >># SMTPD SERVER CONTROLS >>smtpd_sasl_auth_enable = yes >>smtpd_sasl_security_options = noanonymous, noplaintext >>broken_sasl_auth_clients = yes >>smtpd_sasl_local_domain = >>smtpd_recipient_restrictions = permit_sasl_authenticated, >>permit_mynetworks, reject_unauth_destination >> >>smtpd_use_tls = yes >>smtpd_tls_auth_only = yes >>smtpd_tls_key_file = /etc/postfix/cacert/kenny.key >>smtpd_tls_cert_file = /etc/postfix/cacert/kenny.pem >>smtpd_tls_CAfile = /etc/postfix/cacert/cacert.pem >>smtpd_tls_loglevel = 1 >>smtpd_tls_received_header = yes >>smtpd_tls_session_cache_timeout = 3600s >>tls_random_source = dev:/dev/urandom >>-- cut ----------------------------------------- >> >>TLS is enabled, but smtpd_tls_auth_only will only permit >>authorization from clients who have issued (and successfully >>negotiated) the STARTTLS comment. >> >>Also, you can define what methods Postfix accepts by modifying the >>smtp_sasl_security_options directive. >> >>HTH, >> >>-- >> Jonathan Wright ~ mail at djnauk.co.uk >> ~ www.djnauk.co.uk >>-- >> 2.6.12-gentoo-r6-djnauk-b2 AMD Athlon(tm) XP 2100+ >> up 5 days, 3:02, 4 users, load average: 0.72, 0.97, 0.71 >>-- >> "I don't mind straight people as long as they act gay in >> public." >> >> ~ T-shirt worn by Dennis Rodman of the Chicago Bulls >>-- >>gentoo-security@g.o mailing list > > > Joe Strusz > > IT Assistant > Oxford Publishing, Inc. > 307 West Jackson Avenue > Oxford, MS 38655-2154 > 800-247-3881 > 662-236-5510x40 > jstrusz@×××××.com > http://www.nightclub.com > > > -- > gentoo-security@g.o mailing list > >
-- ------------------------------------------------------------------------ | Joerg Mertin : smurphy@××××××.org (Home)| | in Forchheim/Germany : smurphy@×××××.de (Alt1)| | Stardust's LiNUX System : | | Web: http://www.solsys.org | ------------------------------------------------------------------------ PGP Fingerprint: AF0F FB75 997B 025F 4538 5AD6 9888 5D97 170B 8B7A -- gentoo-security@g.o mailing list