diff --git a/mail.log.sh b/mail.log.sh
new file mode 100755
index 0000000..fc45f79
--- /dev/null
+++ b/mail.log.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+#
+# Debian Stretch.
+# System authorization information.
+# Author: aixiao
+# Email: aixiao@aixiao.me
+# Date: 20170909
+# Modify Time: 171125
+#
+
+pwd_path=/root
+TIME=`date +"%Y%m%d"`
+log_file=${pwd_path}/${TIME}.log
+
+echo "Read-Only Memory,ROM:" &>> ${log_file}
+df -am &>> ${log_file}
+
+echo "" &>> ${log_file}
+echo "random access memory，RAM:" &>> ${log_file}
+free -hl &>> ${log_file}
+
+echo "" &>> ${log_file}
+echo "System process:" &>> ${log_file}
+ps -axjf &>> ${log_file}
+
+echo "" &>> ${log_file}
+echo "Network Connections" &>> ${log_file}
+netstat -tnulp &>> ${log_file}
+
+echo "" &>> ${log_file}
+echo "AIC" &>> ${log_file}
+netstat -ntu &>> ${log_file}
+
+echo "" &>> ${log_file}
+echo "System authorization information:" &>> ${log_file}
+if test "`date | awk '{print $3}'`" -ge 10 ; then
+    grep ^`date | awk '{print $2}'`.`date | awk '{print $3}'` /var/log/auth.log &>> ${log_file}
+    grep -E "^`date | awk '{print $2}'`.`date | awk '{print $3}'`" /var/log/auth.log | grep failure | grep rhost | awk '{printf $14 "\n"}' | cut -d = -f 2 | awk '{a[$1]+=1;} END {for(i in a){print a[i]" "i;}}' &>> ${log_file}
+
+    ip=$(grep -E "^`date | awk '{print $2}'`.`date | awk '{print $3}'`" /var/log/auth.log | grep failure | grep rhost | awk '{printf $14 "\n"}' | cut -d = -f 2 | awk '{a[$1]+=1;} END {for(i in a){if (a[i] >= 9) {print i;}}}')
+else
+    grep ^`date | awk '{print $2}'`..`date | awk '{print $3}'` /var/log/auth.log &>> ${log_file}
+    grep -E "^`date | awk '{print $2}'`..`date | awk '{print $3}'`" /var/log/auth.log | grep failure | grep rhost | awk '{printf $14 "\n"}' | cut -d = -f 2 | awk '{a[$1]+=1;} END {for(i in a){print a[i]" "i;}}' &>> ${log_file}
+
+    ip=$(grep -E "^`date | awk '{print $2}'`..`date | awk '{print $3}'`" /var/log/auth.log | grep failure | grep rhost | awk '{printf $14 "\n"}' | cut -d = -f 2 | awk '{a[$1]+=1;} END {for(i in a){if (a[i] >= 9) {print i;}}}')
+fi
+
+ip_add=($ip)
+for i in ${ip_add[@]} ; do
+    /sbin/iptables -I INPUT -s $i -j DROP
+done
+/sbin/iptables-save > /root/ipv4tables
+
+echo "" &>> ${log_file}
+echo "Iptables filter table" &>> ${log_file}
+/sbin/iptables -L -n --line-numbers &>> ${log_file} 
+echo "" &>> ${log_file}
+
+mail -s "System Log" 1605227279@qq.com < ${log_file}
+rm ${log_file}
+sync
+sync
+exit
+aixiao@aixiao.me
+