mac_dolar
Hello,

  1. Check whether the configuration of the roundcube is correct? 135roundcubemail.com to your domain name
    Modify this file:
    /www/wwwroot/135roundcubemail.com/config/config.inc.php
    Add the following:
    $config['enable_installer'] = true;
    Then the browser accesses: http://135roundcubemail.com/installer/?_step=2
    Finally, test the IMAP settings
  2. Can't send to yahoo. Is there any error in returning? With, you can send multiple emails at one time.
  3. Unable to send dkim information header, try to change the permission of the file below
    chmod 644 /www/server/dkim/xx.com/default.private
    systemctl restart rspamd

      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.