Unable to sent mail via Horde webmail: Mailbox unavailable

Created:

2017-05-17 17:07:42 UTC

Modified:

2017-08-08 13:25:42 UTC

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Unable to sent mail via Horde webmail: Mailbox unavailable

Symptoms

Unable to sent mail via Horde webmail with Mailbox unavailable  error message

  • Postfix maillog contains the following

    postfix/smtpd[643275]: NOQUEUE: reject: RCPT from servername[::1]: 450 4.7.1 <email@domain.tld>: Sender address rejected: Access denied; from=<email@domain.tld> to=<user@example.com> proto=ESMTP helo=<servername>
    
  • Cluebringer Policyd is installed and the command below returns non-empty result

    # postconf -n | grep "check_policy_service inet:127.0.0.1:10031"
    
  • Attempt to send a mail via IPv6 address like [::1] failed

Cause

Cluebringer Policyd internal issue

Resolution

Edit /etc/psa-webmail/horde/horde/conf.php and set

$conf['mailer']['params']['host'] = '127.0.0.1';

 

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