title: Linux postfix/dovecot 554 Relay access denied
body: <p>I have this error <code>554 Relay access denied</code>  when trying to send email from my outlook client.</p>
  
  <p>I can read incoming mails but cannot send.</p>
  
  <p>If i connect with telnet localhost 25 i can send external emails, but with outlook client it doesn't work.</p>
  
  <p>Here's my postfix and dovecot config :</p>
  
  <p><strong>postconf -n</strong></p>
  
  <pre><code>alias_database = hash:/etc/aliases
  alias_maps = hash:/etc/aliases
  append_dot_mydomain = no
  biff = no
  config_directory = /etc/postfix
  inet_interfaces = all
  mailbox_size_limit = 0
  mydestination = localhost
  myhostname = mail.mydomain.com
  mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
  myorigin = /etc/mailname
  readme_directory = no
  recipient_delimiter = +
  relayhost =
  smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
  smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination
  smtpd_sasl_auth_enable = yes
  smtpd_sasl_path = private/auth
  smtpd_sasl_type = dovecot
  smtpd_tls_auth_only = yes
  smtpd_tls_cert_file = /etc/ssl/certs/dovecot.pem
  smtpd_tls_key_file = /etc/ssl/private/dovecot.pem
  smtpd_use_tls = yes
  virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf
  virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf
  virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf
  virtual_transport = lmtp:unix:private/dovecot-lmtp
  </code></pre>
  
  <p><strong>doveconf -n</strong></p>
  
  <pre><code># 2.1.7: /etc/dovecot/dovecot.conf
  # OS: Linux 3.9.3-x86_64-linode33 x86_64 Ubuntu 13.04 ext3
  auth_mechanisms = plain login
  mail_location = maildir:/var/mail/vhosts/%d/%n
  mail_privileged_group = mail
  namespace inbox {
    inbox = yes
    location = 
    mailbox Drafts {
      special_use = \Drafts
    }
    mailbox Junk {
      special_use = \Junk
    }
    mailbox Sent {
      special_use = \Sent
    }
    mailbox "Sent Messages" {
      special_use = \Sent
    }
    mailbox Trash {
      special_use = \Trash
    }
    prefix = 
  }
  passdb {
    args = /etc/dovecot/dovecot-sql.conf.ext
    driver = sql
  }
  passdb {
    args = /etc/dovecot/dovecot-sql.conf.ext
    driver = sql
  }
  protocols = imap pop3 lmtp
  service auth-worker {
    user = vmail
  }
  service auth {
    unix_listener /var/spool/postfix/private/auth {
      group = postfix
      mode = 0666
      user = postfix
    }
    unix_listener auth-userdb {
      mode = 0600
      user = vmail
    }
    user = dovecot
  }
  service imap-login {
    inet_listener imap {
      port = 0
    }
  }
  service lmtp {
    unix_listener /var/spool/postfix/private/dovecot-lmtp {
      group = postfix
      mode = 0600
      user = postfix
    }
  }
  service pop3-login {
    inet_listener pop3 {
      port = 0
    }
  }
  ssl = required
  ssl_cert = &lt;/etc/dovecot/dovecot.pem
  ssl_key = &lt;/etc/dovecot/private/dovecot.pem
  userdb {
    args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n
    driver = static
  }
  userdb {
    args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n
    driver = static
  }
  </code></pre>
  
  <p>Any thoughts?</p>