Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    PostFix forwarder - LDAP lookup

    Scheduled Pinned Locked Moved pfSense Packages
    36 Posts 6 Posters 16.7k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • D
      DQM
      last edited by

      @r4iden:

      Awesome thanks - it installed.

      Does the function have a log/indicator somewhere to see it is working?

      Dear r4iden,

      Could you please share your experiences about installation here?

      Thanks a lot,
      DQM

      1 Reply Last reply Reply Quote 0
      • D
        DQM
        last edited by

        Dear all,

        I have just installed p5-perl-ldap on the link above of Marcelloc successful. I am going to configure it and feedback the result soon.

        Thank you,
        DQM

        1 Reply Last reply Reply Quote 0
        • D
          DQM
          last edited by

          Dear all,

          I have configured the Postfix Forwarder to export account from AD (Windows 2003) on following:

          hostname: server01.abc.com
          domain: dc=abc,dc=com
          username: cn=antispam,cn=abc (abc is OU which antispam account is placed)

          But when I run command to test, I did not get any account from AD, pls see the error below:

          extracting from server01.abc.com…(0)
          Total ldap recipients:0 unique:0

          Any advise to great with Postfix Forwarder?

          Many thanks,
          DQM

          1 Reply Last reply Reply Quote 0
          • marcellocM
            marcelloc
            last edited by

            @DQM:

            Any advise to great with Postfix Forwarder?

            It looks fine, can you try with a user at cn Users?

            Treinamentos de Elite: http://sys-squad.com

            Help a community developer! ;D

            1 Reply Last reply Reply Quote 0
            • D
              DQM
              last edited by

              @marcelloc:

              @DQM:

              Any advise to great with Postfix Forwarder?

              It looks fine, can you try with a user at cn Users?

              Same result, marcelloc !  >:( Any advise?

              Thanks,
              DQM

              1 Reply Last reply Reply Quote 0
              • L
                louis-m
                last edited by

                I've just had a bash at this with pfsense 2.1_x64 and windows 2008 r2 and it works fine. wouldn't work with some username though eg Administrator etc

                Slightly off topic but is there any advantage to using this apart from the mail not hitting the exchange server at all?

                1 Reply Last reply Reply Quote 0
                • marcellocM
                  marcelloc
                  last edited by

                  @louis-m:

                  Slightly off topic but is there any advantage to using this apart from the mail not hitting the exchange server at all?

                  It's reduces exchange server load and external link bandwidth as it rejects the email on header checks.

                  Treinamentos de Elite: http://sys-squad.com

                  Help a community developer! ;D

                  1 Reply Last reply Reply Quote 0
                  • marcellocM
                    marcelloc
                    last edited by

                    @DQM:

                    Same result, marcelloc ! Any advise?

                    Are you sure your password is correct? Is there special characters on it?

                    Treinamentos de Elite: http://sys-squad.com

                    Help a community developer! ;D

                    1 Reply Last reply Reply Quote 0
                    • D
                      DQM
                      last edited by

                      @marcelloc:

                      @DQM:

                      Same result, marcelloc ! Any advise?

                      Are you sure your password is correct? Is there special characters on it?

                      Dear marcelloc,

                      I am sure password is correct. Doest it require Exchange server must be installed already in the Actice Directory org?

                      Thanks,

                      1 Reply Last reply Reply Quote 0
                      • marcellocM
                        marcelloc
                        last edited by

                        @DQM:

                        I am sure password is correct. Doest it require Exchange server must be installed already in the Actice Directory org?

                        The script extracts email public information from users at AD. if email address is included by exchange server, then it requires Exchange server.

                        att,
                        Marcello Coutinho

                        Treinamentos de Elite: http://sys-squad.com

                        Help a community developer! ;D

                        1 Reply Last reply Reply Quote 0
                        • V
                          voona
                          last edited by

                          Having the same issues binding to LDAP. Any ideas guys? 2008 R2 Domain Controller

                          Thanks

                          1 Reply Last reply Reply Quote 0
                          • D
                            DQM
                            last edited by

                            @marcelloc:

                            @DQM:

                            I am sure password is correct. Doest it require Exchange server must be installed already in the Actice Directory org?

                            The script extracts email public information from users at AD. if email address is included by exchange server, then it requires Exchange server.

                            att,
                            Marcello Coutinho

                            Hi Marcello,

                            After installing Exchange server, it is working well now. But another issue is SPF feature does not work.
                            I have created TXT record for abc.com(PfSense was able to resolve TXT record of abc.com). After that, I telnet to send mail by smtp command (user1@abc.com send to user1@abc.com), and I can push phishing emails to Postfix Forwarder.

                            Any advise?

                            Thanks,
                            DQM

                            1 Reply Last reply Reply Quote 0
                            • D
                              DQM
                              last edited by

                              Dear Marcello,

                              I'd like to mention the list of task that I did on the Postfix Forwarder on following:

                              • I cannot insert the customise "smtpd_banner" into main.cf. It seens does not allow saving after reboot the Pfsense box. It only allow saving if don't reboot the box. Right?
                              • SPF doesn't work once selected "Strong" at Header verification, only work if select "Basic"
                              • Any changes in the Antispam tab wouldn't send mail to it and got an error message like "501 5.1.7 Bad sender address syntax". After change to "Basic" at Header verification, everything will be ok again.

                              Could you please help to explain in more details?

                              Thank you,
                              DQM

                              1 Reply Last reply Reply Quote 0
                              • V
                                voona
                                last edited by

                                ive tried and tried to get this to ldap scrape from my DC and it doesnt work. I can connect from 50 ldap clients with the same username as password and it works 100%

                                can anyone share their configs etc - 2008 R2 Domain Controller.

                                Is the a guide or document to set this up?

                                Thanks

                                1 Reply Last reply Reply Quote 0
                                • D
                                  DQM
                                  last edited by

                                  @voona:

                                  ive tried and tried to get this to ldap scrape from my DC and it doesnt work. I can connect from 50 ldap clients with the same username as password and it works 100%

                                  can anyone share their configs etc - 2008 R2 Domain Controller.

                                  Is the a guide or document to set this up?

                                  Thanks

                                  Hi voona,

                                  Please follow up the guide below:

                                  Step 1: Install p5-perl-ldap by run command below

                                  i386
                                  pkg_add -r http://e-sac.siteseguro.ws/packages/8/All/p5-perl-ldap-0.4300.tbz

                                  amd64
                                  pkg_add -r http://e-sac.siteseguro.ws/packages/amd64/8/All/p5-perl-ldap-0.4300.tbz

                                  Step 2: Modify adexport.pl file at /usr/local/etc/postfix/adexport.pl

                                  Change the first line of this file to #!/usr/local/bin/perl5.12.4 -w

                                  Step 3: Run command below for testing result
                                  /usr/local/bin/php -q /usr/local/www/postfix_recipients.php

                                  If you get number of recipient from LDAP, then it is working well

                                  P/S: Make sure that Exchange server or any Mail server which is able to public email address attribute of users to LDAP server was installed on your system.

                                  GL,
                                  DQM

                                  1 Reply Last reply Reply Quote 0
                                  • V
                                    voona
                                    last edited by

                                    Ok LDAP is working now i had a space in the username and it didn't like it.

                                    Still seem to be errors when installing the mailscanner package.. clamav doesnt install properly can someone point me in the right direction

                                    Cheers

                                    1 Reply Last reply Reply Quote 0
                                    • R
                                      RobinGill
                                      last edited by

                                      @louis-m:

                                      Slightly off topic but is there any advantage to using this apart from the mail not hitting the exchange server at all?

                                      @marcelloc:

                                      It's reduces exchange server load and external link bandwidth as it rejects the email on header checks.

                                      In addition this feature is very valuable as it prevents backscatter.

                                      Backscatter is when a spammer sends emails to an invalid address at your domain with a spoofed sender address. The intended result of this is to spam the intended recipient i.e the spoofed sender with NDR's from your mail server.

                                      If postfix is configured without this check, it will relay every email it receives that passes other enabled checks to your mail server. When your mail server realises it does not know of a valid recipient/mailbox to deliver the mail to, it should send an NDR to the spoofed sender.

                                      NDR's can be disabled, but this is against RFC2821.

                                      1 Reply Last reply Reply Quote 0
                                      • marcellocM
                                        marcelloc
                                        last edited by

                                        @DQM:

                                        I'd like to mention the list of task that I did on the Postfix Forwarder on following:

                                        • I cannot insert the customise "smtpd_banner" into main.cf. It seens does not allow saving after reboot the Pfsense box. It only allow saving if don't reboot the box. Right?

                                        Did you tried to include this option on postfix custom options field on gui?

                                        @DQM:

                                        • SPF doesn't work once selected "Strong" at Header verification, only work if select "Basic"
                                        • Any changes in the Antispam tab wouldn't send mail to it and got an error message like "501 5.1.7 Bad sender address syntax". After change to "Basic" at Header verification, everything will be ok again.

                                        I have strong header set and it looks like spf is working, do you have any error message or log you detected it.
                                        If it's a bug during package save settings, I can fix next week.

                                        Treinamentos de Elite: http://sys-squad.com

                                        Help a community developer! ;D

                                        1 Reply Last reply Reply Quote 0
                                        • D
                                          DQM
                                          last edited by

                                          @marcelloc:

                                          @DQM:

                                          I'd like to mention the list of task that I did on the Postfix Forwarder on following:

                                          • I cannot insert the customise "smtpd_banner" into main.cf. It seens does not allow saving after reboot the Pfsense box. It only allow saving if don't reboot the box. Right?

                                          Did you tried to include this option on postfix custom options field on gui?

                                          @DQM:

                                          • SPF doesn't work once selected "Strong" at Header verification, only work if select "Basic"
                                          • Any changes in the Antispam tab wouldn't send mail to it and got an error message like "501 5.1.7 Bad sender address syntax". After change to "Basic" at Header verification, everything will be ok again.

                                          I have strong header set and it looks like spf is working, do you have any error message or log you detected it.
                                          If it's a bug during package save settings, I can fix next week.

                                          Dear Marcello,

                                          I have tried to insert the customise "smtpd_banner" by GUI and it is well now. But SPF and any change in the Antispam tab still did not work when "Strong" was selected (I perform testing by SMTP command - telnet to send mail, I did not test by other SMTP server). Does has problem with sending email by command?

                                          Thanks,
                                          DQM

                                          1 Reply Last reply Reply Quote 0
                                          • marcellocM
                                            marcelloc
                                            last edited by

                                            check config files with basic and strong header check enabled to see if spf options are included or not.

                                            Treinamentos de Elite: http://sys-squad.com

                                            Help a community developer! ;D

                                            1 Reply Last reply Reply Quote 0
                                            • First post
                                              Last post
                                            Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.