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Postfix - antispam and relay package

pfSense Packages
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  • Z
    zlyzwy
    last edited by May 29, 2012, 5:17 AM

    can you check on diagnostics table if this ip is listed on pfblocker alias?

    Yes, it's.

    what action did you selected on pfblocker?

    Deny Inbound

    I can see the packets which has been blocked by PFblocker from Dashboard..

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    • M
      marcelloc
      last edited by May 30, 2012, 2:11 AM May 29, 2012, 11:33 AM

      Check the log, it may be coming from more than one ip.

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

      Help a community developer! ;D

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      • Z
        zlyzwy
        last edited by May 30, 2012, 12:36 AM

        @marcelloc:

        Check the log, it maybe comming from more then one ip.

        You are right… there are three ips from one address.

        I blocked them all and it's now OK~

        Thanks for your help~

        1 Reply Last reply Reply Quote 0
        • I
          ics
          last edited by May 31, 2012, 2:26 PM

          Hi,

          In Postfix, is it possible to forward emails to specific servers depending on the recipient email address (not only on the domain) ?

          Thank you

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          • M
            marcelloc
            last edited by May 31, 2012, 4:00 PM

            not yet.  :(

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

            Help a community developer! ;D

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            • Z
              zlyzwy
              last edited by Jun 19, 2012, 11:26 AM

              Hi Marcelloc,

              Can I add the NOQUEUE email address to Whitelist?
              Some of mail server can't pass 'Helo Hostname' check….

              As my understanding, the "access lists" will only work with QUEUE email address.

              Thanks in advance~

              Zlyzwy

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              • M
                marcelloc
                last edited by Jun 19, 2012, 8:31 PM

                The noqueue info in log file are for messages that failed during header check.

                to workaround it,you can:

                • unselect the helo check on config gui

                • add the host hello info to /etc/hosts (check if pfsense boot process does not clean this file)

                • if you really trust the remote domain, add it to mynetworks.

                But the best way is to ask remote site admin to fix his smtp configuration.

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

                Help a community developer! ;D

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                • I
                  ics
                  last edited by Jun 29, 2012, 7:47 AM

                  Hi,

                  In Search Mail some emails have status "sent" even if it's detected as spam (maillog).
                  And for some other emails status "spam" is obviously correct. :)

                  Any explanation ?

                  Another question :
                  the subject displayed is the original subject of the email. Is it possible to view the modified subject also ?

                  Thanks

                  1 Reply Last reply Reply Quote 0
                  • M
                    marcelloc
                    last edited by Jun 29, 2012, 1:08 PM

                    @ics:

                    Any explanation ?

                    Are you using mailscanner too? if so, there are som actions that sends the spam message just changing the subject, so the last action of this message_id is sent as postfix sent it to user.

                    @ics:

                    the subject displayed is the original subject of the email. Is it possible to view the modified subject also ?

                    Not yet, the databased is filled by maillog file, the subject is logged only when messages arrives.

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

                    Help a community developer! ;D

                    1 Reply Last reply Reply Quote 0
                    • B
                      biggsy
                      last edited by Jul 3, 2012, 9:00 AM

                      Hi Marcello,

                      I have an IronPort box that's been trying to bounce the same mail to my mail server, on the hour for nearly three days.

                      The sender address is being rejected for obvious reasons:

                      NOQUEUE: reject: RCPT from ironport2-out.teksavvy.com[206.248.154.182]: 450 4.1.8 mailman-bounces@localhost.localdomain: Sender address rejected: Domain not found; from= mailman-bounces@localhost.localdomain…

                      I tried to whitelist the server, blacklist it and a bunch of other things but the reject_unknown_sender_domain still kicks in and, becasue it's only a 450 response, they try again an hour later.

                      I thought I'd try "soft_bounce=no" but the GUI won't allow me to set that.

                      I can get soft_bounce=yes by setting soft bounce to "enabled" in the GUI but selecting either "Only in PostScreen" or "Disabled" just clears soft_bounce from main.cf.

                      I thought Disabled should set soft_bounce=no but wanted to ask what you think?/mailman-bounces@localhost.localdomain/mailman-bounces@localhost.localdomain

                      1 Reply Last reply Reply Quote 0
                      • M
                        marcelloc
                        last edited by Jul 3, 2012, 1:39 PM

                        The best way to receive this bounce is to send an email to remote site sysadmin explaining his server misconfiguration.
                        To workaround for this misconfigured server, enable dns forwarder service and add missing domain/host as a Host Override.

                        I thought Disabled should set soft_bounce=no but wanted to ask what you think?

                        postfix documentation says that soft_bounce default value is no, so if it's not declared, then soft_bounce=no.

                        soft_bounce (default: no)
                        Safety net to keep mail queued that would otherwise be returned to the sender. This parameter disables locally-generated bounces, and prevents the Postfix SMTP server from rejecting mail permanently, by changing 5xx reply codes into 4xx. However, soft_bounce is no cure for address rewriting mistakes or mail routing mistakes.

                        Example:

                        soft_bounce = yes

                        att,
                        Marcello Coutinho

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

                        Help a community developer! ;D

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                        • I
                          ics
                          last edited by Jul 4, 2012, 12:45 PM

                          Hi,

                          My Postfix rejects emails from a server with the error : "Client host rejected: cannot find your hostname"
                          However, the IP address is perfectly resolvable.
                          And in maillog :
                          "warning: ...: hostname domain.net verification failed: hostname nor servname provided, or not known"

                          I tried to add the IP address in MyNetworks, no change.

                          Do you know what is misconfigured ?

                          Thanks

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                          • M
                            marcelloc
                            last edited by Jul 4, 2012, 1:23 PM

                            The ip address is resolvable, but hostname that server sent on smtp header is?

                            Sometimes this wrong hostname is sent on servername or helo info.

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

                            Help a community developer! ;D

                            1 Reply Last reply Reply Quote 0
                            • I
                              ics
                              last edited by Jul 4, 2012, 1:45 PM

                              postfix says :
                              RCPT from unknown[IP_Address]: 450 4.7.1 Client host rejected: cannot find your hostname
                              The helo is correct and correspond to the IP address when resolved.

                              The hostname in smtp header is the HELO ?
                              If not where can I find it in the log ?

                              Anyway, why is it still rejected while the IP is in MyNetworks ?

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                              • M
                                marcelloc
                                last edited by Jul 4, 2012, 4:40 PM

                                @ics:

                                Anyway, why is it still rejected while the IP is in MyNetworks ?

                                even on MyNetworks, the email must be correct.
                                The mynetworks will allow this ip to relay to any domain.

                                Add this ipname on dns forwarder host override list and check if it pass the resolv test.

                                att,
                                Marcello Coutinho

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

                                Help a community developer! ;D

                                1 Reply Last reply Reply Quote 0
                                • I
                                  ics
                                  last edited by Jul 5, 2012, 11:15 AM

                                  @marcelloc:

                                  Add this ipname on dns forwarder host override list and check if it pass the resolv test.

                                  It works.

                                  Thank you

                                  1 Reply Last reply Reply Quote 0
                                  • A
                                    arosenau
                                    last edited by Jul 13, 2012, 12:03 AM

                                    Has anyone been able to get this to work using Gmail as a relay? I get the following errors when I try and relay through gmail using this package

                                    Jul 12 23:50:51
                                    postfix/smtp[17005]: unable to dlopen /usr/local/lib/sasl2/libgssapiv2.so.2: Shared object "libgssapi.so.10" not found, required by "libgssapiv2.so.2"

                                    Jul 12 23:50:51
                                    postfix/smtp[17005]: unable to dlopen /usr/local/lib/sasl2/libgssapiv2.so.2: Shared object "libgssapi.so.10" not found, required by "libgssapiv2.so.2"

                                    Jul 12 23:50:51
                                    postfix/smtp[17005]: cannot load Certificate Authority data: disabling TLS support

                                    Jul 12 23:50:51
                                    postfix/smtp[17005]: warning: TLS library problem: 17005:error:02001002:system library:fopen:No such file or directory:/usr/src/secure/lib/libcrypto/../../../crypto/openssl/crypto/bio/bss_file.c:126:fopen('/etc/pki/tls/certs/ca-bundle.crt','r'):

                                    Jul 12 23:50:51
                                    postfix/smtp[17005]: warning: TLS library problem: 17005:error:2006D080:BIO routines:BIO_new_file:no such file:/usr/src/secure/lib/libcrypto/../../../crypto/openssl/crypto/bio/bss_file.c:129:

                                    Jul 12 23:50:51
                                    postfix/smtp[17005]: warning: TLS library problem: 17005:error:0B084002:x509 certificate routines:X509_load_cert_crl_file:system lib:/usr/src/secure/lib/libcrypto/../../../crypto/openssl/crypto/x509/by_file.c:274:

                                    I think the most important error is this one
                                    postfix/smtp[17005]: cannot load Certificate Authority data: disabling TLS support

                                    and I would assume that is because it can't find the smtp_tls_CAfile which I also can't find anywhere on the pfsense box, so I can't specify the correct path in my main.cf file.

                                    Any ideas? I'm sure its something simple i missed.  :P

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                                    • M
                                      marcelloc
                                      last edited by Jul 13, 2012, 3:34 AM

                                      @arosenau:

                                      Any ideas? I'm sure its something simple i missed.  :P

                                      you will need some libs from freebsd to get it working.

                                      take a look on my repo.
                                      i386
                                      http://e-sac.siteseguro.ws/pfsense/8/All/ldd/

                                      amd64
                                      http://e-sac.siteseguro.ws/pfsense/8/amd64/All/ldd/

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

                                      Help a community developer! ;D

                                      1 Reply Last reply Reply Quote 0
                                      • A
                                        arosenau
                                        last edited by Jul 16, 2012, 3:20 PM

                                        @marcelloc:

                                        @arosenau:

                                        Any ideas? I'm sure its something simple i missed.  :P

                                        you will need some libs from freebsd to get it working.

                                        take a look on my repo.
                                        i386
                                        http://e-sac.siteseguro.ws/pfsense/8/All/ldd/

                                        amd64
                                        http://e-sac.siteseguro.ws/pfsense/8/amd64/All/ldd/

                                        Can you point me in the right direction on how to get these installed? I am familiar with apt and yum in the Linux world, but I don't know how package management works in the freebsd/pfsense world.

                                        1 Reply Last reply Reply Quote 0
                                        • M
                                          marcelloc
                                          last edited by Jul 16, 2012, 3:32 PM

                                          @arosenau:

                                          Can you point me in the right direction on how to get these installed?

                                          Just download the missing libs to /usr/local/lib using fetch cmd on console/ssh and try again.

                                          att,
                                          Marcello Coutinho

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

                                          Help a community developer! ;D

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