aaPanel_Kern
I get this error when i send email zohomail.com to my domain mailbox "Recipient address rejected: User unknown in local recipient table"
why if I send email to gmail it enters spam and it doesn't enter hotmail.

Please can I send you my control panel login details so that you help me and configure postfix and the roundcube correctly?

      aaPanel_Kern

      I did the testing and it showed 4.7/10
      the things I noticed on the mail header are:

      1) * Received: from bk.com (unknown [8..*.7])
      2) * 1.3 RDNS_NONE Delivered to internal network by a host with no rDNS
      3) * -1.274 RDNS_NONE Delivered to internal network by a host with no rDNS
      This may indicate you do not have a rDNS configured for your hostname or the rDNS does not match your sending IP

      4) Please how do I configure my server rDNS and how to make my mail have dkim pass?
      I configured the dkim record in my server, but it does mark pass on my mail headers.

      Please how do I solve these above issues in my server to make my mail have good reputation?
      and what are the things I need to uncooment or add in the postfix cinfig file?

      Thank you.

          mac_dolar
          Hello, please consult the server provider or network provider for rDNS resolution of IP.
          The transmission of the dkim indicates that the configuration is normal

              aaPanel_Kern
              the server rDNS is showing on my vps panel.
              so how will I configure it on the aapanel to resolve with my mail server?

                  mac_dolar
                  Refer to this article. You need the help of a server provider or network provider
                  https://en.wikipedia.org/wiki/Reverse_DNS_lookup

                      aaPanel_Kern
                      why I can send email from the webmail, but I can't send mail using SMTP, its shows this error below
                      I have tried connecting using port 25, 587, 465 and yet the same error.. the domain.com is used to reference my domain name.

                      Server: mail.domain.com
                      User: user@domail.com
                      Result: FAILED, code 3016: Failed to send command.

                      Transcript:

                      220 mail.domain.com ESMTP Postfix

                      EHLO mail.domain.com
                      250-mail.domain.com
                      250-PIPELINING
                      250-SIZE 102400000
                      250-VRFY
                      250-ETRN
                      250-STARTTLS
                      250-AUTH PLAIN LOGIN
                      250-ENHANCEDSTATUSCODES
                      250-8BITMIME
                      250-DSN
                      250-SMTPUTF8
                      250 CHUNKING
                      STARTTLS
                      220 2.0.0 Ready to start TLS
                      SSL negotiation failed, code 1: SSL module internal error.
                      error:14077438:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert internal error
                      AUTH LOGIN
                      Failed to send command

                      Operation completed: 10/27/2022 5:16:53 p.m.
                      Elapsed time: 1.1 seconds

                      1) Please what could be the problem?
                      2) if possible, please can you give me your email address let me send you my panel login details so that you help me and configure the aapanel mailserver?

                      thank you.

                          mac_dolar
                          Hello, please try to reapply for SSLs at the mail server. At the same time, check the postfix configuration, which can be viewed in the server status
                          "mail.135mailtest.com" is replaced with your domain name
                          Put:
                          smtpd_tls_chain_files=/etc/ssl/private/ssl-cert-snakeoil.key,/etc/ssl/certs/ssl-cert-snakeoil.pem
                          Change to:
                          smtpd_tls_chain_files = /www/server/panel/plugin/mail_sys/cert/135mailtest.com/privkey.pem,/www/server/panel/plugin/mail_sys/cert/135mailtest.com/fullchain.pem
                          Note to replace 135mailtest.com with your domain name.
                          Also check /www/server/panel/plugin/mail_sys/cert/135mailtest.com/ for privkey.pem and fullchain.pem files
                          You can use this command to check whether the correct SSL is configured
                          openssl s_client -connect mail.135mailtest.com:587 -starttls smtp
                          or
                          openssl s_client -connect mail.135mailtest.com:465 -starttls smtp

                              aaPanel_Kern
                              please where can I locate this file below you said I should modify?
                              smtpd_tls_chain_files=/etc/ssl/private/ssl-cert-snakeoil.key,/etc/ssl/certs/ssl-cert-snakeoil.pem

                              I have tried to configure the mailserver many times, but it keeps on not working properly.
                              Please wouldn't it be better I give you me aapanel login details so that you help me and configure the postfix mailserver?

                              thank you.

                                  mac_dolar
                                  Hi, can you give us your aapanel information? The server makes a snapshot backup first, if possible, please send it to kern@aapanel.com.
                                  It is recommended to fill in the following
                                  Post link:
                                  SSH IP address, account password and port:
                                  aapanel login link address and account password:

                                  No post link will not be able to know which user's information is

                                      aaPanel_Kern
                                      Please check the email, I have sent you the all the server information you requested.

                                      Please let me know once the issue is solved!
                                      Thank you so much.

                                        10 months later

                                        Hi, please check if mysql is running? can be found in the app store
                                        Please check whether the database interface can add a test database?
                                        Please check whether the user and password configured on the website are correct?

                                        kloudboy

                                          a year later
                                          a month later

                                          aaPanel_Jose I have tried your method. But after changing password, use can;t login to roubcube webmal anymore. Login failed.