# Reject anybody that HELO's as being in our own domain(s)
# (Note that if you followed the order suggested in the main.cf
# examples, above, that machines in mynetworks will be okay.)


/^\[?10\.\d{1,3}\.\d{1,3}\.\d{1,3}\]?$/ REJECT Address in RFC 1918 private network
/^\[?192\.\d{1,3}\.\d{1,3}\.\d{1,3}\]?$/ REJECT Address in RFC 1918 private network
/^\[?172\.\d{1,3}\.\d{1,3}\.\d{1,3}\]?$/ REJECT Address in RFC 1918 private network

/\d{2,}[-\.]+\d{2,}/ REJECT Invalid hostname (D-D)

/^(((newm|em|gm|m)ail|yandex|rambler|hotbox|chat|rbc|subscribe|spbnit)\.ru)$/ REJECT Faked hostname ($1)
/^(((hotmail|mcim|newm|em)ail|post|hotbox|msn|microsoft|aol|news|compuserve|yahoo|google|earthlink|netscape)\.(com|net))$/ REJECT Faked hostname ($1)