hello..
1) why I can send email from my mailbox both from smtp, but I can't receive in my roundcube mailbox?
2) why is that I can't send email to yahoo, it doesn't deliver both to some many other to email providers?
3) please can you have configure my postfix mailserver with the dkmi ?

    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.