一個通過smtp發送郵件的shell，帶使用者名稱密碼

#!/bin/bashsmail(){        smtp="mail.mailadd.com 25" # 郵件伺服器地址+25連接埠        smtp_domain="mailadd.com" # 發送郵件的網域名稱，即@後面的        FROM="xxx@mailadd.com" # 發送郵件地址        RCPTTO=$1 # 收件者地址        username_base64="xxxxxxxxxxxxxxxxx" # 使用者名稱base64編碼        password_base64="xxxxxxxx" # 密碼base64編碼        local_ip=`ifconfig|grep Bcast|awk -F: '{print $2}'|awk -F " " '{print $1}'|head -1`        local_name=`uname -n`        ( for i in "ehlo $smtp_domain" "AUTH LOGIN" "$username_base64" "$password_base64" "MAIL FROM:<$FROM>" "RCPT TO:<$RCPTTO>" "DATA";do                echo $i                sleep 4        done        echo "Subject:server alert"        echo "From:<$FROM>"        echo "To:<$RCPTTO>"        echo ""        echo "server $local_name up, ip:$local_ip"        echo "."        sleep 2        echo "quit" )|telnet $smtp}smail xxx@163.com # 這裡參數為收信地址