Query for valid email

[Bob Sneidar]

This advice in this article works if the mail server does not encrypt or use authentication, and almost all internet accessible servers do. After EHLO, you would need to enable TLS, then log in. If you did not do this the server would disconnect as soon as you used MAIL FROM:. Also, this only works if the relay you are speaking to hosts the account. If another server does, this will not work.

Bob S


On Apr 27, 2016, at 17:24 , Mike Bonner <bonnmike at gmail.com<mailto:bonnmike at gmail.com>> wrote:

This might be useful..
http://lifehacker.com/5697360/how-to-verify-if-an-email-address-is-real-or-fake
The synopsis is..
1. nslookup to find the mx servers
2. open a port to one of the servers for the address in question and
interact with it to find out if the account exists.
Based on the article, this lets you find out if the account exists or not,
even if there is a "catchall" email address.


On Wed, Apr 27, 2016 at 6:12 PM, Skip Kimpel <skiplondon at gmail.com<mailto:skiplondon at gmail.com>> wrote:

Is there a quick way to script out a process to validate if an email
address is valid against the mail sever you are sending it to?  We are
trying to scrub a large list of old emails to see if they are still valid
or not.

Your input would be most appreciated.