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    Postfix - antispam and relay package

    Scheduled Pinned Locked Moved pfSense Packages
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    • M
      mauricioniñoavella
      last edited by

      how to do my main.cf configuracuion if I have it in centos bit too high I want to pass this pfSense this is my main.cf I want to enable in pfsnese

      thanks for the collaboration

      General settings

      bounce_queue_lifetime = 6h
      mailbox_size_limit = 51200000
      message_size_limit = 10240000
      luser_relay =
      recipient_delimiter = +
      message_strip_characters = \0

      Authentication with SASL

      broken_sasl_auth_clients = yes
      smtpd_sasl_auth_enable = yes
      smtpd_sasl_security_options = noanonymous
      smtpd_sasl_local_domain = $mydomain

      Encryption with TLS

      smtpd_tls_auth_only = yes

      smtpd_use_tls = yes
      smtpd_tls_cert_file = /etc/postfix/cert.pem
      smtpd_tls_key_file = /etc/postfix/key.pem
      smtpd_tls_loglevel = 1

      Mail restrictions (note: Kolab policies are not implemented)

      smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination
      kolabpolicy_time_limit = 3600
      kolabpolicy_max_idle = 20

      Mail routing

      mailbox_transport = mailpostfilter
      content_filter = mailprefilter
      transport_maps = hash:/etc/postfix/transport

      Outbound SMTP authentication

      smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
      smtp_sasl_auth_enable = yes
      smtp_sasl_security_options =
      unknown_local_recipient_reject_code = 550
      smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
      smtp_tls_security_level = may
      smtp_sasl_type = cyrus
      relayhost = [xxxx.com]:587

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      • marcellocM
        marcelloc
        last edited by

        You can put your options on custom main.cf options at gui.

        This package was designed to be a relay server only, I do not recomend enabling mailboxes on it.

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

        Help a community developer! ;D

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

          I just want it to pass and I get this

          postfix/smtpd[50880]: NOQUEUE: reject: RCPT from unknown[192.168.200.xxx]: 554 5.7.1 mauricio.nino@xxx.com.co: Relay access denied; from= root@localhost.localdomainto= mauricio.nino@xxx.com.coproto=ESMTP helo=<localhost.localdomain></localhost.localdomain>/mauricio.nino@xxx.com.co/root@localhost.localdomain/mauricio.nino@xxx.com.co

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

            Include your 192.168.200.xxx internal ip in ACL/fiter map.

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

            Help a community developer! ;D

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

              marcelloc

              appreciate your help but I do not work I have this in the log

              The truth can not be done now, I only serve as a relay,

              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=check_client_access
              Oct 11 16:49:45 postfix/smtpd[29361]: check_namadr_access: name unknown addr 192.168.200.14
              Oct 11 16:49:45 postfix/smtpd[29361]: check_domain_access: unknown
              Oct 11 16:49:45 postfix/smtpd[29361]: dict_cidr_lookup: /usr/local/etc/postfix/cal_cidr: unknown
              Oct 11 16:49:45 postfix/smtpd[29361]: check_addr_access: 192.168.200.14
              Oct 11 16:49:45 postfix/smtpd[29361]: dict_cidr_lookup: /usr/local/etc/postfix/cal_cidr: 192.168.200.14
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=check_client_access status=0
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=permit
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=permit status=1
              Oct 11 16:49:45 postfix/smtpd[29361]: >>> START Helo command RESTRICTIONS <<<
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=reject_unknown_helo_hostname
              Oct 11 16:49:45 postfix/smtpd[29361]: reject_unknown_hostname: localhost.localdomain
              Oct 11 16:49:45 postfix/smtpd[29361]: lookup localhost.localdomain type A flags 0
              Oct 11 16:49:45 postfix/smtpd[29361]: dns_query: localhost.localdomain (A): OK
              Oct 11 16:49:45 postfix/smtpd[29361]: dns_get_answer: type A for localhost.localdomain
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=reject_unknown_helo_hostname status=0
              Oct 11 16:49:45 postfix/smtpd[29361]: >>> END Helo command RESTRICTIONS <<<
              Oct 11 16:49:45 postfix/smtpd[29361]: >>> START Sender address RESTRICTIONS <<<
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=reject_unknown_sender_domain
              Oct 11 16:49:45 postfix/smtpd[29361]: reject_unknown_address: root@localhost.localdomain
              Oct 11 16:49:45 postfix/smtpd[29361]: ctable_locate: move existing entry key root@localhost.localdomain
              Oct 11 16:49:45 postfix/smtpd[29361]: reject_unknown_mailhost: localhost.localdomain
              Oct 11 16:49:45 postfix/smtpd[29361]: lookup localhost.localdomain type MX flags 0
              Oct 11 16:49:45 postfix/smtpd[29361]: dns_query: localhost.localdomain (MX): Host not found
              Oct 11 16:49:45 postfix/smtpd[29361]: lookup localhost.localdomain type A flags 0
              Oct 11 16:49:45 postfix/smtpd[29361]: dns_query: localhost.localdomain (A): OK
              Oct 11 16:49:45 postfix/smtpd[29361]: dns_get_answer: type A for localhost.localdomain
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=reject_unknown_sender_domain status=0
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=permit
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=permit status=1
              Oct 11 16:49:45 postfix/smtpd[29361]: >>> START Recipient address RESTRICTIONS <<<
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=reject_unauth_destination
              Oct 11 16:49:45 postfix/smtpd[29361]: reject_unauth_destination: mauricio.nino@xxxx.com.co
              Oct 11 16:49:45 postfix/smtpd[29361]: permit_auth_destination: mauricio.nino@xxxx.com.co
              Oct 11 16:49:45 postfix/smtpd[29361]: ctable_locate: move existing entry key mauricio.nino@xxxx.com.co
              Oct 11 16:49:45 postfix/smtpd[29361]: NOQUEUE: reject: RCPT from unknown[192.168.200.14]: 554 5.7.1 mauricio.nino@itac.com.co: Relay access denied; from= root@localhost.localdomainto= mauricio.nino@xxx.com.coproto=ESMTP helo=<localhost.localdomain></localhost.localdomain>/mauricio.nino@xxx.com.co/root@localhost.localdomain/mauricio.nino@itac.com.co
              Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=reject_unauth_destination status=2
              Oct 11 16:49:45 postfix/smtpd[29361]: > unknown[192.168.200.14]: 554 5.7.1 mauricio.nino@xxxx.com.co: Relay access denied
              Oct 11 16:49:45 postfix/smtpd[29361]: watchdog_pat: 0x800e115f0
              Oct 11 16:49:45 postfix/smtpd[29361]: < unknown[192.168.200.14]: DATA
              Oct 11 16:49:45 postfix/smtpd[29361]: > unknown[192.168.200.14]: 554 5.5.1 Error: no valid recipients
              Oct 11 16:49:45 postfix/smtpd[29361]: watchdog_pat: 0x800e115f0
              Oct 11 16:49:45 postfix/smtpd[29361]: < unknown[192.168.200.14]: RSET
              Oct 11 16:49:45 postfix/smtpd[29361]: > unknown[192.168.200.14]: 250 2.0.0 Ok
              Oct 11 16:49:45 postfix/smtpd[29361]: watchdog_pat: 0x800e115f0
              Oct 11 16:49:45 postfix/smtpd[29361]: < unknown[192.168.200.14]: QUIT
              Oct 11 16:49:45 postfix/smtpd[29361]: > unknown[192.168.200.14]: 221 2.0.0 Bye
              Oct 11 16:49:45 postfix/smtpd[29361]: match_hostname: unknown ~? 192.168.200.0/23
              Oct 11 16:49:45 postfix/smtpd[29361]: match_hostaddr: 192.168.200.14 ~? 192.168.200.0/23
              Oct 11 16:49:45 postfix/smtpd[29361]: disconnect from unknown[192.168.200.14]

              ![postfix relay.png_thumb](/public/imported_attachments/1/postfix relay.png_thumb)
              ![postfix relay.png](/public/imported_attachments/1/postfix relay.png)/mauricio.nino@xxxx.com.co

              1 Reply Last reply Reply Quote 0
              • J
                jedblack
                last edited by

                marcelloc,

                Thanks for all the hard work!

                I have one question…

                can i use the postfix forwarder to forward my mail to GMAIL server... i'm doing this now with a centos/postfix install... below is the pertinent config file entries..

                SASL authentication

                smtp_tls_security_level=encrypt
                smtp_sasl_auth_enable = yes
                smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
                smtp_sasl_security_options = noanonymous
                relayhost = [smtp.gmail.com]:587
                transport_maps = hash:/etc/postfix/transport

                TLS

                smtp_tls_CAfile = /etc/postfix/cacert.pem
                smtp_tls_cert_file = /etc/postfix/certs/git01.pem
                smtp_tls_key_file = /etc/postfix/certs/git01.key
                smtp_tls_session_cache_database = btree:/var/run/smtp_tls_session_cache
                smtp_use_tls = yes
                smtpd_tls_CAfile = /etc/postfix/cacert.pem
                smtpd_tls_cert_file = /etc/postfix/certs/git01.pem
                smtpd_tls_key_file = /etc/postfix/certs/git01.key
                smtpd_tls_received_header = yes
                smtpd_tls_session_cache_database = btree:/var/run/smtpd_tls_session_cache
                smtpd_use_tls = yes
                smtp_tls_loglevel = 1
                tls_random_source = dev:/dev/urandom
                smtp_cname_overrides_servername = no
                #debug_peer_list=smtp.gmail.com
                #debug_peer_level=3

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

                  Did you tried to include your config in custom main.cf options and of course transfer your files to pfsense?

                  I'm not sure if other options will affect you setup but could work.

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

                  Help a community developer! ;D

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

                    @mauricioniñoavella:

                    marcelloc
                    Oct 11 16:49:45 postfix/smtpd[29361]: dns_query: localhost.localdomain (MX): Host not found
                    Oct 11 16:49:45 postfix/smtpd[29361]: dns_query: localhost.localdomain (A): OK
                    Oct 11 16:49:45 postfix/smtpd[29361]: dns_get_answer: type A for localhost.localdomain
                    Oct 11 16:49:45 postfix/smtpd[29361]: NOQUEUE: reject: RCPT from unknown[192.168.200.14]: 554 5.7.1 mauricio.nino@itac.com.co: Relay access denied; from= root@localhost.localdomainto= mauricio.nino@itac.com.coproto=ESMTP helo=<localhost.localdomain></localhost.localdomain>/mauricio.nino@itac.com.co/root@localhost.localdomain/mauricio.nino@itac.com.co
                    Oct 11 16:49:45 postfix/smtpd[29361]: generic_checks: name=reject_unauth_destination status=2
                    Oct 11 16:49:45 postfix/smtpd[29361]: > unknown[192.168.200.14]: 554 5.5.1 Error: no valid recipients

                    mauricioniñoavella,

                    see what postfix is rejecting and correct it.
                    It looks like you tried to send a email with an invalid sender.
                    If you need this sender, create this domain in dns server that pfsense uses.

                    att,
                    Marcello Coutinho

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

                    Help a community developer! ;D

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

                      marcelloc

                      greeting
                      I tried to do everything

                      Current issue if tusabes Nose to issue

                      generates this error since I only use smtp_sasl

                      mailserver postfix/smtpd[20836]: warning: smtpd_sasl_auth_enable is true, but SASL support is not compiled in
                      mailserver postfix/smtpd[20836]: connect from unknown[xxxx.xxxx.xxxx.xxx]
                      mailserver postfix/smtpd[20836]: disconnect from unknown[xxxx.xxxx.xxxx.xxx]

                      I hit it in the

                      custom main.cf options

                      smtp_sasl_auth_enable = yes
                      smtp_sasl_password_maps = hash:/usr/local/etc/postfix/sasl_passwd
                      smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination
                      relayhost = [smtp.xxx.com]:587

                      thanks for your collaboration

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

                        Seems that many people need SASL auth, I will put in postfix forwarder TODO list.

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

                        Help a community developer! ;D

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

                          Too bad I could bother you confirm if it works as a relay Services: Postfix relay and antispam (postfix forwarder) and also worked with
                          STARTTLS

                          thanks for your collaboration

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

                            Hello,

                            I must say I am glad to see this package. Mail proxies and mail forwarders with filtering is a must have these days. I am new to this package and was wondering if there is any documentation on how to configure and set it up for use. Some of the setting are unclear to me.

                            I am not sure what the binding setting is for the WAN, LAN, and loopback and can't find anything that explains it better or what basic settings should be set to. Also, when I removed my SMTP port forward form NAT and rules to use this package, I am having trouble recieving mails. I went to mxtoolbox.com and did a diagnostics test and I don't get a header response or anything. It just says host times out from inactivity.

                            I really did not change any of the default setting from the install and yes I did add the domain with a forwarding internal address.

                            Could someone help or post a basic setup that would get this working. It is a little hard to figure settings with no documentation or explinations of settings.

                            Thanks,

                            MDP

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

                              at docs.pfsense.com has some info but not so detailed.

                              the basic setup is:

                              • remove nat from port 25

                              • create a wan rule to permit smtp traffic to wan address

                              • check enable postfix option

                              • choose at least wan loopback interfaces

                              • fill your domain/internal smtp info

                              Many options has recommend, default and link option to postfix documentation.

                              I recommend enable all antispam settings too.

                              att,
                              Marcello Coutinho

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

                              Help a community developer! ;D

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

                                Hey thanks very much for the info. I will give a try. I really like the concept of this package and have waited a while to see something like this come out for pfsense, so thanks for all your hard work.

                                I do have one question for your response. When you say WAN loopback interface, do you mean select the WAN interface only, the loopback interface only, or both?

                                Thanks Again,

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

                                  So I have e-mails forwarding ok now and thanks for the basic info for that. Just curious, as I seen in early to mid last month a post you made about mailscanner, and was wondering if this will become part of the base install of the postfix forwarder package?

                                  Currently I am unsure how to implement this ability and not really sure on what the ACLs/Filter maps tab does.

                                  If you made this package an all inclusive install with all the components needed for a full SMTP filter, that would be sweet.

                                  Thanks

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

                                    Mailscanner + spamassassin will be released soon as a new package with more then 500 options to filter spam. As I told in other posts, I'm waiting Mailscanner package compilation by core team. But if you know how mailscanner works you can add freebsd package and configure it.

                                    Can you feedback in % how postfix + all antispam settings reduced spam messages on mailboxes?

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

                                    Help a community developer! ;D

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

                                      Yeah, I will post some stats in a about a week. I will compare report files from our other filtering system and see what a rough % in reduction maybe. I can say that I have noticed a difference already just from last night when I enabled it. I am seeing a lot of RBLS blocks and invalide host address blocks. Normally this would get cought by our other filter, but not always for some reason.

                                      For the most part, it seems to be working very well and I am excited for the Mailscanner package.

                                      I have been playing around with the ACLs/Filter Maps section and was wondering if a manual blacklist block and whitelist allow will be added?

                                      Thanks,

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

                                        The ACLs allow you to block or permit ips, subjects, atachments and Also filter message body.

                                        Take a look at samples below each field.

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

                                        Help a community developer! ;D

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

                                          Ahhh yes, I am starting to understand how you are laying this out. This all makes sense now. I guess I have just been getting to use to check boxes and enable buttons way to much LOL.

                                          Thanks again for the info.

                                          Take Care

                                          MDP

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

                                            hello

                                            marcelloc

                                            I can confirm you this module can function as a relay host, thatis I work as an SMTP forwarder to an external mail Server using STARTTLS

                                            I congratulate you for your great support for this great pauqete, Proxies and redirects mail, I'm new in this package I would like know if there is some configuration information, as a forwarder (SMTP) mail to an external Server "Outbound Relay Hosts"

                                            Could anyone help me with the basic configuration to work as mail forwarder to an external server authentication through a little priest specified. It's a bit difficult to understand the configuration without documentation or configuration give some tics.

                                            thanks for your collaboration

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