anchor.diff:    -o smtpd_hard_error_limit=1000
     -o smtpd_client_connection_count_limit=0
     -o smtpd_client_connection_rate_limit=0
  -  -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks
  +#  -o local_header_rewrite_clients=
  +#  -o local_recipient_maps=
  +#  -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks
  +#  -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks,no_milters
  +#  -o relay_recipient_maps=
  
positive.code: # Also specify in main.cf: maildrop_destination_recipient_limit=1
  #
  maildrop  unix  -       n       n       -       -       pipe
    flags=DRhu user=vmail argv=/usr/local/bin/maildrop -d ${recipient}
  #
  # The Cyrus deliver program has changed incompatibly, multiple times.
  #
  old-cyrus unix  -       n       n       -       -       pipe
    flags=R user=cyrus argv=/usr/lib/cyrus-imapd/deliver -e -m ${extension} ${user}
  # Cyrus 2.1.5 (Amos Gouaux)
  # Also specify in main.cf: cyrus_destination_recipient_limit=1
  cyrus     unix  -       n       n       -       -       pipe
    user=cyrus argv=/usr/lib/cyrus-imapd/deliver -e -r ${sender} -m ${extension} ${user}
  #
  # See the Postfix UUCP_README file for configuration details.
  #
  
negative.code:   -o max_use=20
  127.0.0.1:10025 inet    n       -       -       -       -       smtpd
    -o content_filter=
    -o smtpd_restriction_classes=
    -o smtpd_delay_reject=no
    -o smtpd_client_restrictions=permit_mynetworks,reject
  