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    Postfix - antispam and relay package

    Scheduled Pinned Locked Moved pfSense Packages
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    • S
      Sn3ak
      last edited by

      Great, glad to hear. Actually I know very little about postfix, I've historically been a qmail guy.
      Any pointers on setting it up as a backup mx? or am I going to need to add custom fields?

      I think I will attempt to setup a vm (to be on the safe side) to test this with later this evening
      if I get a chance.

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

        Configure your mx1 to accept relay from mx2 and add mx1 on postfix config as an internal server.

        Quite simple and full gui support for this setup. :)

        Most all options has help,hints and link to oficial postfix documentation.

        Just to know, I was a sendmail guy before decide to migrate this antispam solution to postfix.

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

        Help a community developer! ;D

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        • S
          Sn3ak
          last edited by

          Perfect, I'll be giving it a shot. Thanks for the information.
          Yeah, I used sendmail for a # of years before moving to qmail for an anti-spam solution
          as amavisd wasn't really cutting it back then.

          I'm tired of trying to figure out qmail logs when things break though, so I've been meaning
          to try out postfix, and this is the perfect opportunity to kick the tires a little.

          1 Reply Last reply Reply Quote 0
          • S
            Sn3ak
            last edited by

            Figured I would report my success. The package looks great.
            It looks like Anvil Daemon is more or less required, otherwise
            it spits out errors in the maillog, and seems to cause a small
            connection delay as well (at least on my setup).

            I turned off most of the protections, since it is a secondary
            MX, and I wasn't doing any filtering previously, at least until
            I have a chance to read up more as to what the settings do.

            I am however however excited by the Valid recipients from clear
            text url option. That will cut out a lot of the junk that gets stuck
            in the secondary MX.

            I'll need to read more about that, and find out the format of the
            text file, and how often it polls, but that is a very nice option.

            Thanks for the good work.

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

              The format is

              Email@domain.com ok
              Admin@domain.com ok
              .
              .
              .

              As my active directory is on local lan, I've setup a 1h update frequecy.

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

              Help a community developer! ;D

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              • S
                Sn3ak
                last edited by

                Thanks, I haven't had a chance to try that.. I do have another problem that you may be able to help me with.

                It seems adding:
                myhostname=mx02.example.com
                smtp_helo_name=mx02.example.com

                is ignored by postfix, at first it wasn't being added to main.cf, but finally that started working, however is being ignored.

                postconf -d | grep example
                mydomain = example.local
                myhostname = pfsense.example.local

                as well as smtp_helo_name =  not being respected if changed either.

                I'm attempting to change the name to my correct external hostname so other email servers (including my primary) don't get
                upset due to the .local address

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                • marcellocM
                  marcelloc
                  last edited by

                  Change pfsense host and domain info on system settings.

                  Did you tried to paste this config on custom field and then checking config file?

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

                  Help a community developer! ;D

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                  • S
                    Sn3ak
                    last edited by

                    Sorry for the late reply, as it turns out the settings did take, however postconf -d
                    doesn't reflect it, and, using telnet on localhost apparently uses the default and
                    ignores the setting.

                    Would it be possible to add a delete option in the queue screen, since you are already displaying the Message ID?
                    Command would be postsuper -d msgID. Also maybe another button at the bottom for deleting all Mailer-Daemon
                    emails? Command would be: mailq | grep -v "^[^0-9A-Z]" | grep MAILER-DAEMON | awk '{print $1}' | xargs postsuper -d

                    If nothing else, I can probably submit patches, as long as you are interested in including them.

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

                      Good to know this package is being usefull for you. :)

                      Did you applied postfix conf after changing machine name and domain?

                      Patches and improvements are welcome, let me test it first before publishing.

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

                      Help a community developer! ;D

                      1 Reply Last reply Reply Quote 0
                      • P
                        Popupgbg
                        last edited by

                        Split domain mail functionality

                        I don´t know if this package can do this but it would be nice to have it with a GUI. I know that sometimes hosting providers is using Postfix to provide a split domain functionality on mailservice. The use Postfix to receive all mails addressed to different recipients in different domains in Postfix. They setup the possibility to forward incoming mail so that mail to a@domain.com  is sent to an POP server and mail to b@domain.com to an Exchange server. This due to the fact that all users in an organization don´t need the functionality of an Exchange server.
                        This is my request  :)

                        /Thanks

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                        • M
                          madas
                          last edited by

                          Hello,

                          I'm trying to modify this part of the main.cf to remove the reject_unknown_sender_domain

                          –--------------
                          smtpd_sender_restrictions = reject_unknown_sender_domain,
                          permit

                          My server is using a remote DNS so I cannot add a A or MX record for some of my local servers so I need to remove this option (or add a permit_mynetworks above it).

                          I cannot seem to do this anyway in the gui.  I can do it manually but it seems to be overwritten shortly after.

                          Any ideas?

                          Thanks

                          M

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

                            Madas,

                            Include your hosts on my network acl.

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

                            Help a community developer! ;D

                            1 Reply Last reply Reply Quote 0
                            • M
                              madas
                              last edited by

                              I have.  The reject_unknown_sender_domain seems to be bouncing the message before the network ACL's are checked.

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

                                @madas:

                                I have.  The reject_unknown_sender_domain seems to be bouncing the message before the network ACL's are checked.

                                It will work if you create this dummy domain on your internal dns and point pfsense to use it.

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

                                Help a community developer! ;D

                                1 Reply Last reply Reply Quote 0
                                • M
                                  madas
                                  last edited by

                                  My firewall points directly to the ISP's DNS.  I don't run a local one that is accessible from my firewall.  I just want to remove that restriction

                                  1 Reply Last reply Reply Quote 0
                                  • L
                                    LinuxTracker
                                    last edited by

                                    Finally set this up today and have read through the thread.

                                    I seem to be missing something in the basic configuration.

                                    Notes: I disabled the port 25 NAT and associated rule.
                                    A new rule to allow port 25 to WAN Address is in place and is logged.
                                    I let it run for 15+min.

                                    My Port 25 Rules block 1k spam connects/hour.  I find I've grown attached to them. /notes

                                    Problem:
                                    If I bind to Postfix to WAN, Postfix receives and passes mail correctly; but Port 25 Rules are ignored.
                                    When I bind to loopback-only, I don't see any indication that any mail is reaching Postfix.

                                    In both cases, the Rule Logs show traffic being passed to the WAN address.

                                    What am I missing?

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

                                      Hi linuxtracker,

                                      When you listen postfix on loopback only, you need a Nat rule to forward traffic from wan address to localhost.

                                      In both cases, you need to put block rules before allow rules on firewall tab.

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

                                      Help a community developer! ;D

                                      1 Reply Last reply Reply Quote 0
                                      • L
                                        LinuxTracker
                                        last edited by

                                        @marcelloc:

                                        In both cases, you need to put block rules before allow rules on firewall tab.

                                        Crap.  That is exactly what I did.  I know better too.

                                        Now I have to go wear the hat for the rest of the day.

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                                        • marcellocM
                                          marcelloc
                                          last edited by

                                          No intention to call you dunce, I was just posting full info to solve your problem.
                                          Sorry.  :(

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

                                          Help a community developer! ;D

                                          1 Reply Last reply Reply Quote 0
                                          • L
                                            LinuxTracker
                                            last edited by

                                            @marcelloc:

                                            No intention to call you dunce, I was just posting full info to solve your problem.
                                            Sorry.

                                            I wasn't irritated with you.  I was poking fun at myself for making a rookie mistake.

                                            If you hadn't set me straight, I'd probably still be banging my head against it.

                                            So - Thank you.

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