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Thread: 550 5.1.1 <admin@example.com>: Recipient address rejected: example.com

  1. #1
    Britt81 is offline Beginner Member
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    Default 550 5.1.1 <admin@example.com>: Recipient address rejected: example.com

    I'm trying to setup 2 mail-servers inside my Local Area Network, sender.com(ubuntu/LAPTOP) and example.com (dsm/NAS). Both are linux systems and both use postfix, the following goes wrong when sending a message from user@sender.com to admin@example.com

    ==============================
    The Telnet command
    ==============================
    telnet localhost 25
    220 sender.com ESMTP Postfix (Ubuntu)

    EHLO example.com
    250-example.com
    250-PIPELINING
    250-SIZE 10240000
    250-VRFY
    250-ETRN
    250-STARTTLS
    250-ENHANCEDSTATUSCODES
    250-8BITMIME
    250 DSN

    mail from: user@sender.com
    250 2.1.0 OK

    rcpt to: admin@example.com
    550 5.1.1 <admin@example.com>: Recipient address rejected: example.com

    ==============================
    DNS Records
    ==============================
    Master zone: example.com
    example.com MX 1 smtp.example.com
    smtp.example.com A 192.168.1.2
    example.com A 192.168.1.2
    m.example.com A 192.168.1.2
    example.com NS Example Domain
    Example Domain A 192.168.1.2

    Master zone: sender.com
    smtp.sender.com A 192.168.1.123
    sender.com MX 1 smtp.sender.com
    sender.com A 192.168.1.123
    www.sender.com A 192.168.1.123
    sender.com NS www.sender.com

    ==============================
    Result of postconf -n on example.com
    ==============================

    alias_database = hash:/var/packages/MailServer/target/etc/aliases
    alias_maps = hash:/var/packages/MailServer/target/etc/aliases
    broken_sasl_auth_clients = yes
    command_directory = /var/packages/MailServer/target/sbin
    config_directory = /var/packages/MailServer/target/etc
    cyrus_sasl_config_path = /var/packages/MailServer/target/etc
    daemon_directory = /var/packages/MailServer/target/libexec
    data_directory = /var/lib/postfix
    disable_vrfy_command = yes
    home_mailbox = .Maildir/
    inet_protocols = ipv4, ipv6
    mail_owner = postfix
    mailbox_command = /var/packages/MailServer/target/libexec/dovecot/dovecot-lda -f "$SENDER" -a "$RECIPIENT"
    mailbox_size_limit = 0
    mailq_path = /var/packages/MailServer/target/bin/mailq
    message_size_limit = 10485760
    mydestination = $myhostname, localhost.$mydomain, localhost
    myhostname = example.com
    newaliases_path = /var/packages/MailServer/target/bin/newaliases
    queue_directory = /var/spool/postfix
    recipient_bcc_maps = hash:/var/packages/MailServer/target/etc/bcc/recipient_bcc
    sender_bcc_maps = hash:/var/packages/MailServer/target/etc/bcc/sender_bcc
    sendmail_path = /var/packages/MailServer/target/sbin/sendmail
    setgid_group = maildrop
    smtpd_client_restrictions = check_client_access hash:/var/packages/MailServer/target/etc/access/client_access, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
    smtpd_recipient_restrictions = check_client_access hash:/var/packages/MailServer/target/etc/access/client_access, check_sender_access hash:/var/packages/MailServer/target/etc/access/sender_access, check_recipient_access hash:/var/packages/MailServer/target/etc/access/recipient_access, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
    smtpd_sasl_auth_enable = no
    smtpd_sasl_authenticated_header = yes
    smtpd_sender_restrictions = reject_unknown_sender_domain
    smtpd_tls_cert_file = /usr/syno/etc/ssl/ssl.crt/server.crt
    smtpd_tls_key_file = /usr/syno/etc/ssl/ssl.key/server.key
    smtpd_tls_security_level = may
    unknown_local_recipient_reject_code = 550

  2. #2
    phoenix is online now Zimbra Consultant & Moderator
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    Default

    Quote Originally Posted by Britt81 View Post
    Both are linux systems and both use postfix,
    These are Community support forums for supporting Zimbra Collaboration Server, have you installed that on both of these machines? If you haven't and you're just using Postfix then I suggest you ask your question in a Ubuntu or general linux user forum.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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