cat /var/log/maillog | grep "Jun" | wc
 490137

cat /var/log/maillog | grep "Jun" | grep "denied" | wc
 354975

cat /var/log/maillog | grep "Jun  1" | wc
  77539

cat /var/log/maillog | grep "Jun  2" | wc
 153438

cat /var/log/maillog | grep "Jun  3" | wc
 151490

cat /var/log/maillog | grep "Jun  4" | wc
  52738

cat /var/log/maillog | grep "Jun  5" | wc
  23712

cat /var/log/maillog | grep "Jun  1" | grep "denied" | wc
  59963

cat /var/log/maillog | grep "Jun  2" | grep "denied" | wc
 118737

cat /var/log/maillog | grep "Jun  3" | grep "denied" | wc
 117119

cat /var/log/maillog | grep "Jun  4" | grep "denied" | wc
  40090

cat /var/log/maillog | grep "Jun  5" | grep "denied" | wc
  18864