I've asked this several times over the past year with essentially zero responses. I'll keep it simple:
Does NTLM authentication work in Dovecot? I'll post this one last time. If I still have no responses I'll have to conclude that no one has actually tried this authentication method and it therefore does not work. Thanks, --Mark -----Original Message----- From: Mark Foley <mfo...@ohprs.org> Date: Fri, 22 Apr 2016 02:07:24 -0400 Organization: Ohio Highway Patrol Retirement System To: dovecot@dovecot.org Subject: Looking for NTLM config example > Now that I am running Thunderbird on Linux and away from Windows/Outlook, I'd > like to take > another run at setting up NTLM authentication from Thunderbird to my Samba4 > AC/DC. > > With the help of the samba maillist folks I was able to set up NTLM > authentication for domain > user login. I should be able to do the same for email! > > But, I need help. I went to > http://wiki2.dovecot.org/Authentication/Mechanisms/NTLM and got > lost immediately. Are "authenticaion submethods" synonymous with "password > schemes"? The 7th > line down says, "NTLM password scheme is required for NTLM, NTLM2 and > NTLMv2.", but in the > referenced link I found no reference to "NTLM password scheme". > > The links http://wiki2.dovecot.org/Authentication/Mechanisms/NTLM and > http://wiki2.dovecot.org/Authentication/PasswordSchemes, tell you what the 4 > NTLM > authentication submethods are, tells you what password schemes are, tells you > what the NTLM > client/server handshake is, but doesn't actually tell you how to configure > dovecot config > files. I'm much more interested in the "how to" than in: "NTLMv2: server and > client nonce, > MITM can't force downgrade" ... whatever that means. > > Anyway, probably it's my lack of understanding terminology. I don't even > know what a "nonce" > is. But, I learn well from examples! Can somone please give me a sample > 10-auth.conf for NTML > and any other supporting settings or configs I need? > > My current/working dovecot settings, which have been running perfectly for > well over a year > now, are: > > $ dovecot -n > # 2.2.15: /usr/local/etc/dovecot/dovecot.conf > # OS: Linux 3.10.17 x86_64 Slackware 14.1 > auth_debug_passwords = yes > auth_mechanisms = plain login > auth_verbose = yes > auth_verbose_passwords = plain > disable_plaintext_auth = no > info_log_path = /var/log/dovecot_info > mail_location = maildir:~/Maildir > passdb { > driver = shadow > } > protocols = imap > ssl_cert = > </etc/ssl/certs/OHPRS/GoDaddy/Apache/2015-08-14/57aa6ed6ae98b4c7.crt > ssl_key = </etc/ssl/certs/OHPRS/GoDaddy/my.server.name.key > userdb { > driver = passwd > } > verbose_ssl = yes > > > Here's what I've tried so far as 10-auth.conf: > > disable_plaintext_auth = no > auth_use_winbind = yes > info_log_path = /var/log/dovecot_info > auth_verbose = yes > auth_debug_passwords = yes > auth_verbose_passwords= plain > auth_winbind_helper_path = /usr/bin/ntlm_auth > > auth_mechanisms = ntlm plain login > > userdb { > driver = passwd > args = username_format=%n allow_all_users=yes > > } > > > Which gives me a dovecot -n of: > > $ dovecot -n > # 2.2.15: /usr/local/etc/dovecot/dovecot.conf > # OS: Linux 3.10.17 x86_64 Slackware 14.1 > auth_debug_passwords = yes > auth_mechanisms = ntlm plain login > auth_use_winbind = yes > auth_verbose = yes > auth_verbose_passwords = plain > disable_plaintext_auth = no > info_log_path = /var/log/dovecot_info > mail_location = maildir:~/Maildir > protocols = imap > ssl_cert = > </etc/ssl/certs/OHPRS/GoDaddy/Apache/2015-08-14/57aa6ed6ae98b4c7.crt > ssl_key = </etc/ssl/certs/OHPRS/GoDaddy/my.server.name.key > userdb { > args = username_format=%n allow_all_users=yes > driver = passwd > } > verbose_ssl = yes > > > I configured Thunderbird for NTLM authentication, then tried sending a > message, I got the > following in /var/log/dovecot_info: > > Apr 22 01:37:57 imap-login: Debug: SSL: elliptic curve secp384r1 will be used > for ECDH and ECDHE key exchanges > Apr 22 01:37:57 imap-login: Debug: SSL: elliptic curve secp384r1 will be used > for ECDH and ECDHE key exchanges > Apr 22 01:37:57 auth: Debug: Loading modules from directory: > /usr/local/lib/dovecot/auth > Apr 22 01:37:57 imap-login: Info: Disconnected: Auth process broken > (disconnected before auth was ready, waited 0 secs): user=<>, > rip=192.168.0.58, lip=98.102.63.107, session=<xFuyOgwx9wDAqAA6> > > > On Thunderbird I got the error, "Sending of the message failed. The > Outlgoing server (SMTP) > my.server.name does not support the selected authentication method. Please > change the > 'Autnentication method' in 'Account Settings | Outgoing Server (SMTP)'." > > Clearly, something is configured wrong, but I've no clue what. > > Can I get some advice? > > THX --Mark >From dovecot-boun...@dovecot.org Fri Apr 22 02:07:47 2016 Return-Path: <dovecot-boun...@dovecot.org> X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.98.6 at mail X-Spam-Checker-Version: SpamAssassin 3.3.2-_revision__1.19__ (2011-06-06) on mail.hprs.local X-Spam-Level: X-Spam-Status: No, score=-106.0 required=3.0 tests=USER_IN_WHITELIST, USER_IN_WHITELIST_TO autolearn=unavailable version=3.3.2-_revision__1.19__ X-Original-To: dovecot@dovecot.org Delivered-To: dovecot@dovecot.org X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.98.6 at mail From: Mark Foley <mfo...@ohprs.org> Date: Fri, 22 Apr 2016 02:07:24 -0400 Organization: Ohio Highway Patrol Retirement System To: dovecot@dovecot.org Subject: Looking for NTLM config example User-Agent: Heirloom mailx 12.5 7/5/10 Content-Type: text/plain; charset=us-ascii X-BeenThere: dovecot@dovecot.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Dovecot Mailing List <dovecot.dovecot.org> List-Unsubscribe: <http://dovecot.org/cgi-bin/mailman/options/dovecot>, <mailto:dovecot-requ...@dovecot.org?subject=unsubscribe> List-Archive: <http://dovecot.org/pipermail/dovecot/> List-Post: <mailto:dovecot@dovecot.org> List-Help: <mailto:dovecot-requ...@dovecot.org?subject=help> List-Subscribe: <http://dovecot.org/cgi-bin/mailman/listinfo/dovecot>, <mailto:dovecot-requ...@dovecot.org?subject=subscribe> Errors-To: dovecot-boun...@dovecot.org Sender: "dovecot" <dovecot-boun...@dovecot.org> X-Spam-Report: * -100 USER_IN_WHITELIST From: address is in the user's white-list * -6.0 USER_IN_WHITELIST_TO User is listed in 'whitelist_to' Status: R Now that I am running Thunderbird on Linux and away from Windows/Outlook, I'd like to take another run at setting up NTLM authentication from Thunderbird to my Samba4 AC/DC. With the help of the samba maillist folks I was able to set up NTLM authentication for domain user login. I should be able to do the same for email! But, I need help. I went to http://wiki2.dovecot.org/Authentication/Mechanisms/NTLM and got lost immediately. Are "authenticaion submethods" synonymous with "password schemes"? The 7th line down says, "NTLM password scheme is required for NTLM, NTLM2 and NTLMv2.", but in the referenced link I found no reference to "NTLM password scheme". The links http://wiki2.dovecot.org/Authentication/Mechanisms/NTLM and http://wiki2.dovecot.org/Authentication/PasswordSchemes, tell you what the 4 NTLM authentication submethods are, tells you what password schemes are, tells you what the NTLM client/server handshake is, but doesn't actually tell you how to configure dovecot config files. I'm much more interested in the "how to" than in: "NTLMv2: server and client nonce, MITM can't force downgrade" ... whatever that means. Anyway, probably it's my lack of understanding terminology. I don't even know what a "nonce" is. But, I learn well from examples! Can somone please give me a sample 10-auth.conf for NTML and any other supporting settings or configs I need? My current/working dovecot settings, which have been running perfectly for well over a year now, are: $ dovecot -n # 2.2.15: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 3.10.17 x86_64 Slackware 14.1 auth_debug_passwords = yes auth_mechanisms = plain login auth_verbose = yes auth_verbose_passwords = plain disable_plaintext_auth = no info_log_path = /var/log/dovecot_info mail_location = maildir:~/Maildir passdb { driver = shadow } protocols = imap ssl_cert = </etc/ssl/certs/OHPRS/GoDaddy/Apache/2015-08-14/57aa6ed6ae98b4c7.crt ssl_key = </etc/ssl/certs/OHPRS/GoDaddy/my.server.name.key userdb { driver = passwd } verbose_ssl = yes Here's what I've tried so far as 10-auth.conf: disable_plaintext_auth = no auth_use_winbind = yes info_log_path = /var/log/dovecot_info auth_verbose = yes auth_debug_passwords = yes auth_verbose_passwords= plain auth_winbind_helper_path = /usr/bin/ntlm_auth auth_mechanisms = ntlm plain login userdb { driver = passwd args = username_format=%n allow_all_users=yes } Which gives me a dovecot -n of: $ dovecot -n # 2.2.15: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 3.10.17 x86_64 Slackware 14.1 auth_debug_passwords = yes auth_mechanisms = ntlm plain login auth_use_winbind = yes auth_verbose = yes auth_verbose_passwords = plain disable_plaintext_auth = no info_log_path = /var/log/dovecot_info mail_location = maildir:~/Maildir protocols = imap ssl_cert = </etc/ssl/certs/OHPRS/GoDaddy/Apache/2015-08-14/57aa6ed6ae98b4c7.crt ssl_key = </etc/ssl/certs/OHPRS/GoDaddy/my.server.name.key userdb { args = username_format=%n allow_all_users=yes driver = passwd } verbose_ssl = yes I configured Thunderbird for NTLM authentication, then tried sending a message, I got the following in /var/log/dovecot_info: Apr 22 01:37:57 imap-login: Debug: SSL: elliptic curve secp384r1 will be used for ECDH and ECDHE key exchanges Apr 22 01:37:57 imap-login: Debug: SSL: elliptic curve secp384r1 will be used for ECDH and ECDHE key exchanges Apr 22 01:37:57 auth: Debug: Loading modules from directory: /usr/local/lib/dovecot/auth Apr 22 01:37:57 imap-login: Info: Disconnected: Auth process broken (disconnected before auth was ready, waited 0 secs): user=<>, rip=192.168.0.58, lip=98.102.63.107, session=<xFuyOgwx9wDAqAA6> On Thunderbird I got the error, "Sending of the message failed. The Outlgoing server (SMTP) my.server.name does not support the selected authentication method. Please change the 'Autnentication method' in 'Account Settings | Outgoing Server (SMTP)'." Clearly, something is configured wrong, but I've no clue what. Can I get some advice? THX --Mark
