Error receiving mail from postfix

[Jerry]

When mail is relayed to dovecot from postfix, I am getting this error message
in the maillog:

Jul  1 07:05:19 scorpio postfix/pipe[45488]: 3h2jQl3Xldz3FMPc: to=<user at domain.com>, relay=dovecot, delay=0.16, delays=0.12/0.01/0/0.03, dsn=4.3.0, status=deferred (temporary failure. Command output: lda: Error: user user at domain.com: Error reading configuration: Invalid settings: postmaster_address setting not given lda: Fatal: Internal error occurred. Refer to server log for more information. )

Is this a Postfix problem or a Dovecot problem?

# OS: FreeBSD 10.0-RELEASE-p3 amd64  ufs
auth_debug_passwords = yes
auth_mechanisms = plain login cram-md5 digest-md5 ntlm
auth_verbose = yes
auth_verbose_passwords = plain
log_path = /var/log/dovecot
mail_location = maildir:/var/mail/vmail/seibercom/gerard
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave duplicate
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 = username_format=%u /usr/local/etc/dovecot/user/passwd
  driver = passwd-file
}
passdb {
  driver = pam
}
passdb {
  args = scheme=CRYPT username_format=%u /usr/local/etc/dovecot/user/passwd
  driver = passwd-file
}
plugin {
  sieve_global_path = /usr/local/etc/dovecot/sieve/default.sieve
}
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0666
    user = postfix
  }
  unix_listener auth-userdb {
    group = vmail
    mode = 0666
    user = vmail
  }
}
service imap-login {
  inet_listener imap {
    port = 143
  }
  inet_listener imaps {
    port = 993
    ssl = yes
  }
}
service pop3-login {
  inet_listener pop3 {
    port = 110
  }
  inet_listener pop3s {
    port = 995
    ssl = yes
  }
}
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
  args = username_format=%u /usr/local/etc/dovecot/user/passwd
  default_fields = uid=vmail gid=vmail
  driver = passwd-file
}
userdb {
  driver = passwd
}
userdb {
  args = username_format=%u /usr/local/etc/dovecot/user/passwd
  driver = passwd-file
}
protocol lda {
  mail_plugins = " sieve"
}


-- 
jerry