We have built an API that verifies a address existence in the respective MX using
RCTP command. Their are many services available out there but we like to do it again since we have few clients who need this service, And we manage their lists.
The application uses more than just one way verification, from syntax to mailbox existence and spam databases. The application worked fine with all the ISPs like gmail, yahoo, msn etc but our test server's IP got blacklisted. Now we want to set-up a dedicated server and other things that will let up verify at lest 15-20k list per day.
So, my question is how to do it, What are the hardwares and softwares needed and any suggestion to make it more secure maybe using a advance SSL/TSL etc or using some relays, I dont know about it but got many suggestions about it. I am open for any architecture for the server and ready to spend any amount of money. In any situation the server's IP must not get BLACKLISTED.
This is not about capacity management because sending bulk request is not allowed without secure environment.
Thanks alot, Meeshal K