bulk email verification with ip rotation

Hi, We need an app that could verify emails existence; 1- Validate it is a proper email address 2- Get the domain of the email 3- Grab the DNS MX records for that domain 4- Create a TCP connection to the smtp server 5- Send a EHLO message 6- Send a MAIL FROM message 7- Send a RCPT TO message 8- If they all validate, return an object with success: true. If any stage fails, the callback object will have success: false. After verifying a number of email using the process above, it should automatically change ip address. We'll be using a server with multiple IPs. It's very urgent. Cheers.