fix 'sendmail does not exist' on centos 7

AutoPing.sh

@@ -102,7 +102,7 @@ after() {
 }
 
 install_SMP() {
-	rpm_packages="smokeping tcptraceroute wqy-zenhei-fonts.noarch"
+	rpm_packages="smokeping tcptraceroute sendmail wqy-zenhei-fonts.noarch"
 	apt_packages="smokeping echoping traceroute tcptraceroute"
 	read -rp "输入监控页面端口（默认20000）：" port1
 	ss -tnlp | grep -q ":${port1:-20000} " && echo -e "${RED}端口 ${port1:-20000} 已被占用${PLAIN}" && exit 1
@@ -174,8 +174,6 @@ configureUb() {
 	echo ""
 	echo "Smokeping安装完成，监控页面：http://$ip:${port1:-20000}/smokeping"
 	echo ""
-	echo "注意："
-	echo "如有必要请在防火墙放行 ${port1:-20000} 端口"
 	echo "请等待一会，监控数据不会立即更新"
 	echo ""
 }
@@ -197,9 +195,6 @@ configureUbAgent() {
 	echo ""
 	echo "Agent安装完成，请到监控页面添加Agent和下发策略：$monitorSvr"
 	echo ""
-	echo "注意："
-	echo "如有必要请在防火墙放行 9123 端口"
-	echo ""
 }
 
 configureCe() {
@@ -239,8 +234,6 @@ configureCe() {
 	echo ""
 	echo "Smokeping安装完成，监控页面：http://$ip:${port1:-20000}/smokeping/sm.cgi"
 	echo ""
-	echo "注意："
-	echo "如有必要请在防火墙放行 ${port1:-20000} 端口"
 	echo "请等待一会，监控数据不会立即更新"
 	echo ""
 }
@@ -261,8 +254,5 @@ configureCeAgent() {
 	echo ""
 	echo "Agent安装完成，请到监控页面添加Agent和下发策略：$monitorSvr"
 	echo ""
-	echo "注意："
-	echo "如有必要请在防火墙放行 9123 端口"
-	echo ""
 }
 selectAction