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    Solved Zabbix - email alerts

    IT Discussion
    zabbix linux centos centos 7 postfix email smtp mta
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    • Mike DavisM
      Mike Davis
      last edited by

      @hobbit666 said in Zabbix - email alerts:

      I think I gave up trying to get the mail.protection thingy to work and ended up just using a mail box with port 587 and STARTTLS

      So install ssmpt and mailx and go about it that way? I could try that with a gmail account and see if I get anything that way.

      scottalanmillerS 2 Replies Last reply Reply Quote 0
      • scottalanmillerS
        scottalanmiller @Mike Davis
        last edited by

        @Mike-Davis said in Zabbix - email alerts:

        @hobbit666 said in Zabbix - email alerts:

        I think I gave up trying to get the mail.protection thingy to work and ended up just using a mail box with port 587 and STARTTLS

        So install ssmpt and mailx and go about it that way? I could try that with a gmail account and see if I get anything that way.

        Are you sure that that is needed? Does it even use Postfix? Have you tested it without that?

        Mike DavisM 1 Reply Last reply Reply Quote 0
        • scottalanmillerS
          scottalanmiller @Mike Davis
          last edited by scottalanmiller

          @Mike-Davis said in Zabbix - email alerts:

          So install ssmpt and mailx and go about it that way?

          mailx is a client app, not used for applications to send mail. That's just for you to send them by hand.

          Do you have reason to believe that postfix doesn't have TLS capability by default? This is an enterprise OS here. Our matching system didn't need anything special to handle TLS to O365, right?

          Mike DavisM 1 Reply Last reply Reply Quote 0
          • JaredBuschJ
            JaredBusch
            last edited by

            Postfix can most certainly use TLS.

            1 Reply Last reply Reply Quote 0
            • Mike DavisM
              Mike Davis @scottalanmiller
              last edited by

              @scottalanmiller said in Zabbix - email alerts:

              Do the logs tell you anything?

              I looked at the /var/log/zabbix/zabbix_server.log and didn't see anything related to email. What are the names of the other log files I should look at?

              scottalanmillerS JaredBuschJ 2 Replies Last reply Reply Quote 0
              • scottalanmillerS
                scottalanmiller @Mike Davis
                last edited by

                @Mike-Davis said in Zabbix - email alerts:

                @scottalanmiller said in Zabbix - email alerts:

                Do the logs tell you anything?

                I looked at the /var/log/zabbix/zabbix_server.log and didn't see anything related to email. What are the names of the other log files I should look at?

                Well normally /var/log/maillog, but it is completely empty prompting me to think that postfix is not being asked to send anything.

                1 Reply Last reply Reply Quote 0
                • JaredBuschJ
                  JaredBusch @Mike Davis
                  last edited by

                  @Mike-Davis said in Zabbix - email alerts:

                  @scottalanmiller said in Zabbix - email alerts:

                  Do the logs tell you anything?

                  I looked at the /var/log/zabbix/zabbix_server.log and didn't see anything related to email. What are the names of the other log files I should look at?

                  /var/log/maillog
                  
                  Mike DavisM 1 Reply Last reply Reply Quote 0
                  • Mike DavisM
                    Mike Davis @scottalanmiller
                    last edited by Mike Davis

                    @scottalanmiller said in Zabbix - email alerts:

                    Our matching system didn't need anything special to handle TLS to O365, right?

                    right, that's why I set up the connector in o365. So I could send mail in on port 25 without authentication.

                    scottalanmillerS 1 Reply Last reply Reply Quote 0
                    • Mike DavisM
                      Mike Davis @JaredBusch
                      last edited by

                      @JaredBusch said in Zabbix - email alerts:

                      /var/log/maillog

                      is empty.

                      JaredBuschJ scottalanmillerS 2 Replies Last reply Reply Quote 0
                      • JaredBuschJ
                        JaredBusch @Mike Davis
                        last edited by

                        @Mike-Davis said in Zabbix - email alerts:

                        @JaredBusch said in Zabbix - email alerts:

                        /var/log/maillog

                        is empty.

                        Then it is not using postfix

                        1 Reply Last reply Reply Quote 0
                        • Mike DavisM
                          Mike Davis @scottalanmiller
                          last edited by

                          @scottalanmiller said in Zabbix - email alerts:

                          So install ssmpt and mailx and go about it that way? I could try that with a gmail account and see if I get anything that way.

                          Are you sure that that is needed?

                          Not sure it's needed. I was looking at this guide:
                          http://www.tecmint.com/configure-zabbix-to-send-email-alerts-to-gmail/

                          scottalanmillerS 1 Reply Last reply Reply Quote 0
                          • scottalanmillerS
                            scottalanmiller @Mike Davis
                            last edited by

                            @Mike-Davis said in Zabbix - email alerts:

                            @scottalanmiller said in Zabbix - email alerts:

                            Our matching system didn't need anything special to handle TLS to O365, right?

                            right, that's why I set up the connector in o365. So I could send mail in on port 25 without authentication.

                            I'm confused. Doesn't that mean the opposite of what I said?

                            1 Reply Last reply Reply Quote 0
                            • scottalanmillerS
                              scottalanmiller @Mike Davis
                              last edited by

                              @Mike-Davis said in Zabbix - email alerts:

                              @JaredBusch said in Zabbix - email alerts:

                              /var/log/maillog

                              is empty.

                              That's what I said 🙂

                              1 Reply Last reply Reply Quote 0
                              • scottalanmillerS
                                scottalanmiller @Mike Davis
                                last edited by

                                @Mike-Davis said in Zabbix - email alerts:

                                @scottalanmiller said in Zabbix - email alerts:

                                So install ssmpt and mailx and go about it that way? I could try that with a gmail account and see if I get anything that way.

                                Are you sure that that is needed?

                                Not sure it's needed. I was looking at this guide:
                                http://www.tecmint.com/configure-zabbix-to-send-email-alerts-to-gmail/

                                Why? It's purpose is expressly to do something different from what we have today: "This tutorial will briefly discuss you on how to setup Zabbix server to send mail reports to a Gmail address by using SSMTP program, without the need to install and configure any local MTA daemon, such as Postfix, Exim etc."

                                We already have Postfix installed, running and you said that you tested it and it worked.

                                Mike DavisM 1 Reply Last reply Reply Quote 0
                                • scottalanmillerS
                                  scottalanmiller
                                  last edited by

                                  Let's stick to testing one thing at a time. Don't hit one hiccup and start ripping and replacing the entire email system. Chances are we are dealing with something really simple, like Zabbix isn't trying to send email or isn't trying to use the MTA. If we have to put SMTP details into Zabbix, it seems like it is trying to send directly without Postfix, otherwise it would use the Postfix settings, right?

                                  Mike DavisM 1 Reply Last reply Reply Quote 1
                                  • Mike DavisM
                                    Mike Davis @scottalanmiller
                                    last edited by

                                    @scottalanmiller
                                    This command works:

                                    sendmail <myemailaddress>@ntg.co < /tmp/email.txt
                                    

                                    That was to make sure that no firewalls or anything were getting in the way. That said, when I checked the headers, it didn't seem to connect directly to the o365 connector where I expected it to.

                                    scottalanmillerS 1 Reply Last reply Reply Quote 0
                                    • Mike DavisM
                                      Mike Davis @scottalanmiller
                                      last edited by

                                      @scottalanmiller said in Zabbix - email alerts:

                                      Let's stick to testing one thing at a time. Don't hit one hiccup and start ripping and replacing the entire email system. Chances are we are dealing with something really simple, like Zabbix isn't trying to send email or isn't trying to use the MTA. If we have to put SMTP details into Zabbix, it seems like it is trying to send directly without Postfix, otherwise it would use the Postfix settings, right?

                                      I agree.

                                      1 Reply Last reply Reply Quote 0
                                      • scottalanmillerS
                                        scottalanmiller @Mike Davis
                                        last edited by

                                        @Mike-Davis said in Zabbix - email alerts:

                                        That was to make sure that no firewalls or anything were getting in the way. That said, when I checked the headers, it didn't seem to connect directly to the o365 connector where I expected it to.

                                        Where did you expect it to? Should be TLS on Port 25.

                                        Mike DavisM 1 Reply Last reply Reply Quote 0
                                        • scottalanmillerS
                                          scottalanmiller
                                          last edited by

                                          Before we head down any rabbit holes, change the settings in Zabbix to send to port 25 on the local machine.

                                          Mike DavisM 1 Reply Last reply Reply Quote 0
                                          • Mike DavisM
                                            Mike Davis @scottalanmiller
                                            last edited by

                                            @scottalanmiller said in Zabbix - email alerts:

                                            That was to make sure that no firewalls or anything were getting in the way. That said, when I checked the headers, it didn't seem to connect directly to the o365 connector where I expected it to.

                                            Where did you expect it to? Should be TLS on Port 25.

                                            scratch that. It did connect to protection.outlook.com

                                            I don't think TLS is needed because the connector in o365 is just set to allow the connection by IP address.

                                            scottalanmillerS 1 Reply Last reply Reply Quote 0
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