# If the message contains SCR or PIF we want to Log this
deny    log_message = DENY: ATTACHMENT ($found_extension) for $acl_m3
        message = Message Denied due to Content of a Unacceptable
Attachment type of ($found_extension) \n \
         Please use other means to send this type of file. \n \
         If you have questions please contact postmaster@$qualify_domain
        demime = scr:pif:exe:com:bat
        delay = 30s
------------------------- deny from sender_host_address, MySQL
acl_block_hosts:
  deny log_message = Connection from $sender_host_address denied \
                       by acl_block_hosts
       hosts       = mysql;select 1 from blocks where \
                             address = '$sender_host_address'
  accept

------------------------- accept connection on port 587
accept  hosts = +auth_relay_hosts
          condition = ${if eq {$interface_port}{587} {yes}{no}}
          endpass
          message = relay not permitted, authentication required
          authenticated = *
----------------- listen on two ports 
daemon_smtp_ports = 25 : 587

separate acl_smtp_rcpt ACLs for ports 25 & 587

acl_smtp_rcpt = ${if eq {$interface_port}{25} \
                  {check_recipient_port_smtp}{check_recipient_port_msa}}

------------------------- 
reject all addresses fo this form where yyyymmdd is older that
roughly one year (stating an alternate address in the reject message
in case a real human being sent the mail)

 deny    domains       = +local_domains : +virtual_domains
          local_parts   = ^usenet-(\\d{8})\$
          set acl_m0    = ${if match{$tod_log}{^\N(\d\d\d\d)-(\d\d)-(\d\d)\N}\
                              {${eval:($1*12)+$2}}{0}}
          set acl_m1    = ${if match{$local_part}{^usenet-\N(\d{4})(\d{2})\N}\
                            {${eval:($1*12)+$2}}{0}}
          set acl_m2    = ${eval:$acl_m0-$acl_m1}
          set acl_m3    = ${if <{$acl_m2}{13}{no}{yes}}
          message       = This address has expired. Use usenet@example.com
instead.
          condition     = ${if eq{$acl_m3}{yes}{yes}{no}}
          delay         = 30s

 first calculating the current month's number
(year*12 + month) in acl_m0, then the number of the month given in the
recipients address in acl_m1. Further along the difference is calculated,
and if too large, the mail is rejected.
WARNING: issue with octal (>= 08)
-------------------------
deny message = We don't want your spam! Go away!
log_message = adsl-ameritech reject
condition = \
  ${if and {   \
    {match{$lc:$sender_helo_name}}{adsl}}  \
    {match{$lc:$sender_helo_name}}{ameritech}} \
    }{true}{false}}

If the hostname (like adsl-###-###-###-###.ameritech.com), then try this:
        hosts = ^adsl.*\.ameritech\.com$
-------------------------
-------------------------