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    Resolved - Postfix on Fedora 29 - Why Can't I Send Mail?

    IT Discussion
    postfix fedora 29 mail server dnf-automatic vultr email smtp fedora linux
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    • W
      wrx7m @dbeato
      last edited by

      @dbeato said in Postfix on Fedora 29 - Why Can't I Send Mail?:

      @wrx7m said in Postfix on Fedora 29 - Why Can't I Send Mail?:

      I am setting up Postfix on Fedora 29 to send notifications for dnf-automatic and fail2ban. This server is running on Vultr and I am trying to send from DomainB.com to DomainA.com. DomainB is a new domain that hasn't been used for anything and DomainA is our main email domain, setup on Office 365.

      In the postfix logs, I am getting connection timed out -

      Mar 18 17:19:41 HOSTNAME postfix/qmgr[4085]: EEE853EE90: from=<root@subdomain.domainB.com>, size=465, nrcpt=1 (queue active)
      Mar 18 17:20:11 HOSTNAME postfix/smtp[9703]: connect to domainA-com.mail.protection.outlook.com[104.47.48.36]:25: Connection timed out
      

      I have tried disabling firewalld, but still have the same issue. Not sure where the hangup is. Any suggestions on what to check?

      Can you actually telnet to port 25? I usually needed to contact support to open outbound SMTP
      https://www.vultr.com/faq/

      2019-03-18_1341.png

      I'll try that now.

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      • S
        scottalanmiller
        last edited by

        Vultr blocks email on all systems by default. To send outbound from Vultr you must always open a ticket and request that port 25 traffic be allowed.

        W J 2 Replies Last reply Reply Quote 1
        • W
          wrx7m @scottalanmiller
          last edited by

          @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

          Vultr blocks email on all systems by default. To send outbound from Vultr you must always open a ticket and request that port 25 traffic be allowed.

          Thanks. I will start there and see if that solves my problems.

          1 Reply Last reply Reply Quote 0
          • I
            IRJ @wrx7m
            last edited by

            @wrx7m said in Postfix on Fedora 29 - Why Can't I Send Mail?:

            I am setting up Postfix on Fedora 29 to send notifications for dnf-automatic and fail2ban. This server is running on Vultr and I am trying to send from DomainB.com to DomainA.com. DomainB is a new domain that hasn't been used for anything and DomainA is our main email domain, setup on Office 365.

            In the postfix logs, I am getting connection timed out -

            Mar 18 17:19:41 HOSTNAME postfix/qmgr[4085]: EEE853EE90: from=<root@subdomain.domainB.com>, size=465, nrcpt=1 (queue active)
            Mar 18 17:20:11 HOSTNAME postfix/smtp[9703]: connect to domainA-com.mail.protection.outlook.com[104.47.48.36]:25: Connection timed out
            

            I have tried disabling firewalld, but still have the same issue. Not sure where the hangup is. Any suggestions on what to check?

            I just went through this on Friday

            W 1 Reply Last reply Reply Quote 1
            • W
              wrx7m @IRJ
              last edited by

              @IRJ said in Postfix on Fedora 29 - Why Can't I Send Mail?:

              @wrx7m said in Postfix on Fedora 29 - Why Can't I Send Mail?:

              I am setting up Postfix on Fedora 29 to send notifications for dnf-automatic and fail2ban. This server is running on Vultr and I am trying to send from DomainB.com to DomainA.com. DomainB is a new domain that hasn't been used for anything and DomainA is our main email domain, setup on Office 365.

              In the postfix logs, I am getting connection timed out -

              Mar 18 17:19:41 HOSTNAME postfix/qmgr[4085]: EEE853EE90: from=<root@subdomain.domainB.com>, size=465, nrcpt=1 (queue active)
              Mar 18 17:20:11 HOSTNAME postfix/smtp[9703]: connect to domainA-com.mail.protection.outlook.com[104.47.48.36]:25: Connection timed out
              

              I have tried disabling firewalld, but still have the same issue. Not sure where the hangup is. Any suggestions on what to check?

              I just went through this on Friday

              Me too. 😉 LOL. Picked it back up today.

              1 Reply Last reply Reply Quote 0
              • J
                JaredBusch @scottalanmiller
                last edited by

                @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                Vultr blocks email on all systems by default. To send outbound from Vultr you must always open a ticket and request that port 25 traffic be allowed.

                This is an account level block. So, you only need do it once per account.

                W S 2 Replies Last reply Reply Quote 1
                • W
                  wrx7m @JaredBusch
                  last edited by

                  @JaredBusch said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                  @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                  Vultr blocks email on all systems by default. To send outbound from Vultr you must always open a ticket and request that port 25 traffic be allowed.

                  This is an account level block. So, you only need do it once per account.

                  Oh good. That explains why the systems administrator (his title) referred me to the account management team.

                  J S 2 Replies Last reply Reply Quote 0
                  • J
                    JaredBusch @wrx7m
                    last edited by JaredBusch

                    @wrx7m said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                    @JaredBusch said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                    @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                    Vultr blocks email on all systems by default. To send outbound from Vultr you must always open a ticket and request that port 25 traffic be allowed.

                    This is an account level block. So, you only need do it once per account.

                    Oh good. That explains why the systems administrator (his title) referred me to the account management team.

                    WTF?
                    You submit a support ticket and you are done...

                    https://mangolassi.it/topic/11625/cannot-send-emails-out-on-vultr

                    My very first ticket to Vultr Support ever:
                    614b5dd6-ad26-4a98-b257-6f8b41f035ce-image.png

                    1 Reply Last reply Reply Quote 3
                    • S
                      scottalanmiller @JaredBusch
                      last edited by

                      @JaredBusch said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                      @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                      Vultr blocks email on all systems by default. To send outbound from Vultr you must always open a ticket and request that port 25 traffic be allowed.

                      This is an account level block. So, you only need do it once per account.

                      With ours it is per machine. Every new machine we request it.

                      J 1 Reply Last reply Reply Quote 0
                      • S
                        scottalanmiller @wrx7m
                        last edited by

                        @wrx7m said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                        @JaredBusch said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                        @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                        Vultr blocks email on all systems by default. To send outbound from Vultr you must always open a ticket and request that port 25 traffic be allowed.

                        This is an account level block. So, you only need do it once per account.

                        Oh good. That explains why the systems administrator (his title) referred me to the account management team.

                        Never been referred before. You just submit and minutes later it is done.

                        1 Reply Last reply Reply Quote 0
                        • J
                          JaredBusch @scottalanmiller
                          last edited by

                          @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                          @JaredBusch said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                          @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                          Vultr blocks email on all systems by default. To send outbound from Vultr you must always open a ticket and request that port 25 traffic be allowed.

                          This is an account level block. So, you only need do it once per account.

                          With ours it is per machine. Every new machine we request it.

                          That is not what their policy states.

                          S 1 Reply Last reply Reply Quote 0
                          • S
                            scottalanmiller @JaredBusch
                            last edited by

                            @JaredBusch said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                            @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                            @JaredBusch said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                            @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                            Vultr blocks email on all systems by default. To send outbound from Vultr you must always open a ticket and request that port 25 traffic be allowed.

                            This is an account level block. So, you only need do it once per account.

                            With ours it is per machine. Every new machine we request it.

                            That is not what their policy states.

                            Weird, not how it works for us in practice.

                            1 Reply Last reply Reply Quote 0
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                              wrx7m
                              last edited by

                              From Vultr account management - I included most of this in my initial request -

                              Hello,

                              Thank you for contacting us. We have received your SMTP Unblock request. However before we can remove this block, we must verify additional information.

                              Please reply to this ticket with the following information:

                              1. The business name and organization URL(s) under which you offer services.
                              2. Describe, in as much detail as possible, the nature of the emails you intend to send.
                              3. The volume of email that you plan to deliver on a daily/monthly basis.

                              We need to know this information to make an informed decision regarding your account settings.

                              Please let us know if you have any questions.

                              Kind Regards,
                              Kanita Z.
                              Customer Support

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                              • W
                                wrx7m
                                last edited by wrx7m

                                My reply for the 2nd and 3rd questions.

                                1. The emails are only used for alerts/notifications to our IT department from a handful of monitoring apps/services (fail2ban, dnf-automatic, etc) on the vultr server instances we will be using.
                                2. Very light volume. Again, these are not going to be used as a dedicated mail server; all mail generated from our Vultr instances will be delivered to our Office 365/Exchange online account.

                                Plus, I asked this question-

                                Are you able to open 25 for our entire account, or will I have to request this for each instance?

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                                  JaredBusch
                                  last edited by

                                  No real argument with their follow up questions.

                                  Those are good to get documented. Even if they don't mean shit.

                                  I 1 Reply Last reply Reply Quote 1
                                  • W
                                    wrx7m
                                    last edited by wrx7m

                                    Vultr should have a form for this specific request. I have lost a day waiting for them on the back and forth. They close at 5 ET. First, they give you to tech, then tech reviews it and sends it to account management, who then has to ask you the questions, then you wait based on your reply.

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                                    • S
                                      scottalanmiller @wrx7m
                                      last edited by

                                      @wrx7m said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                                      Vultr should have a form for this specific request. I have lost a day waiting for them on the back and forth. They close at 5 ET. First, they give you to tech, then tech reviews it and sends it to account management, who then has to ask you the questions, then you wait based on your reply.

                                      I've never had that happen before.

                                      W 1 Reply Last reply Reply Quote 0
                                      • W
                                        wrx7m @scottalanmiller
                                        last edited by

                                        @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                                        @wrx7m said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                                        Vultr should have a form for this specific request. I have lost a day waiting for them on the back and forth. They close at 5 ET. First, they give you to tech, then tech reviews it and sends it to account management, who then has to ask you the questions, then you wait based on your reply.

                                        I've never had that happen before.

                                        Well, maybe they changed the procedure to make it more convoluted and less efficient.

                                        S 1 Reply Last reply Reply Quote 0
                                        • I
                                          IRJ @JaredBusch
                                          last edited by

                                          @JaredBusch said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                                          No real argument with their follow up questions.

                                          Those are good to get documented. Even if they don't mean shit.

                                          I agree. Spammers make everyone lose

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                                          • W
                                            wrx7m
                                            last edited by

                                            d8a7b2ec-00cc-4817-b439-f86597107ea0-image.png

                                            @scottalanmiller said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                                            @wrx7m said in Postfix on Fedora 29 - Why Can't I Send Mail?:

                                            Vultr should have a form for this specific request. I have lost a day waiting for them on the back and forth. They close at 5 ET. First, they give you to tech, then tech reviews it and sends it to account management, who then has to ask you the questions, then you wait based on your reply.

                                            I've never had that happen before.

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