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Thread: [SOLVED] 5.1.1 Recipient address rejected

  1. #1
    stefan is offline Junior Member
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    Unhappy [SOLVED] 5.1.1 Recipient address rejected

    Hi everybody!

    If I try to send a mail to an external account which definitely exists, I get the error mentioned in the title. The strange thing is, that this only happens, if I try to send this mail from my zimbra account. If I send it from a gmx account for example, it works pretty well.

    What could be the reason for that? I didn't change anything of the configuration on zimbra, but since yesterday clients start complaining about it.

    Some weeks ago I followed the "Improving Anti-spam system" thread of the wiki and made the following restrictions:

    Code:
    zimbra@mail-new:/root> zmprov gacf | grep zimbraMtaRestriction
    zimbraMtaRestriction: reject_invalid_hostname
    zimbraMtaRestriction: reject_non_fqdn_hostname
    zimbraMtaRestriction: reject_non_fqdn_sender
    Further, I enabled smtpd_reject_unlisted_recipients in zmmta.cf, but this is just for incoming mails, right?

    Maybe you need to know my main.cf as well:

    Code:
    sender_canonical_maps = ldap:/opt/zimbra/conf/ldap-scm.cf
    virtual_alias_domains = ldap://opt/zimbra/conf/ldap-vad.cf
    recipient_delimiter =
    smtpd_tls_cert_file = /opt/zimbra/conf/smtpd.crt
    smtpd_tls_auth_only = no
    myhostname = mail-new.domain.com
    virtual_mailbox_domains = ldap:/opt/zimbra/conf/ldap-vmd.cf
    mydestination = localhost
    mailbox_size_limit = 0
    setgid_group = postdrop
    smtpd_client_restrictions = reject_unauth_pipelining
    virtual_alias_maps = ldap:/opt/zimbra/conf/ldap-vam.cf
    transport_maps = ldap:/opt/zimbra/conf/ldap-transport.cf
    sendmail_path = /opt/zimbra/postfix-2.4.3.4z/sbin/sendmail
    message_size_limit = 10240000
    broken_sasl_auth_clients = yes
    alias_maps = hash:/etc/aliases
    manpage_directory = /opt/zimbra/postfix-2.4.3.4z/man
    smtpd_helo_required = yes
    in_flow_delay = 1s
    daemon_directory = /opt/zimbra/postfix-2.4.3.4z/libexec
    virtual_transport = error
    mynetworks = 127.0.0.0/8 196.7.100.0/24
    smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination, reject_invalid_hostname, reject_non_fqdn_hostname, reject_non_fqdn_se
    nder, permit
    smtpd_tls_loglevel = 3
    relayhost =
    disable_dns_lookups = no
    content_filter = smtp-amavis:[127.0.0.1]:10024
    virtual_mailbox_maps = ldap:/opt/zimbra/conf/ldap-vmm.cf
    mail_owner = postfix
    version = 2.4.3.4z
    mailq_path = /opt/zimbra/postfix-2.4.3.4z/sbin/mailq
    header_checks = pcre:/opt/zimbra/conf/postfix_header_checks
    smtpd_use_tls = yes
    queue_directory = /opt/zimbra/data/postfix/spool
    newaliases_path = /opt/zimbra/postfix-2.4.3.4z/sbin/newaliases
    smtpd_reject_unlisted_recipient = yes
    smtpd_data_restrictions = reject_unauth_pipelining
    smtpd_tls_key_file = /opt/zimbra/conf/smtpd.key
    command_directory = /opt/zimbra/postfix-2.4.3.4z/sbin
    smtpd_sasl_auth_enable = yes
    If you have any idea why this error occurs, please let me know! Thank you!

    Cheers,
    Stefan

  2. #2
    uxbod's Avatar
    uxbod is offline Moderator
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    Default

    Please post a extract from /var/log/zimbra.log for when this happens. Need to see the exact details of why it is being rejected.

  3. #3
    stefan is offline Junior Member
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    Default

    Thanks for your reply!

    In /var/log/zimbra.log nothing really special happens. This is all I get when I try to send that mail:

    Code:
    May 30 16:44:20 mail-new saslauthd[11993]:
    auth_zimbra: stefan.asanger@ourcompany.co.za auth OK
    I found more details in /var/log/mail.info:

    Code:
    May 30 16:08:50 mail-new postfix/smtpd[20897]:
    NOQUEUE: reject: RCPT from unknown[196.7.*.*]: 550 5.1.1
    <dietmar@domain.co.za>: Recipient address rejected: domain.co.za;
    from=<stefan.asanger@ourcompany.co.za> to=<dietmar@domain.co.za>
    proto=ESMTP helo=<[196.7.*.*]>
    Does that help you?

  4. #4
    DGSO is offline Junior Member
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    Default

    I am experiencing the same errors. Why is this thread marked "solved"? I see no solution.

  5. #5
    veronica is offline Outstanding Member
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    disable smtpd_reject_unlisted_recipients. The rejection is because of this.

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