Verifying email address through VBA

[netusimcotudam]

Hi,
can anybody help me with task to check if email address is correct? I dont mean format, but if it bounces without sending an email.
There are online services to do that for some price so it is possible to do it somehow(they were correct for my company mail, personal mail, gmail etc.).

So far I tried it in python through smtp and rcpt commands, but that only works for gmail.

I would like to use those online services, but company policy does not allow to do so.

Please send help.

Thanks.

 

[netusimcotudam]

Self update:
Altough it would be in theory possible to give smtp server right parameters, that those companies are using to verify if email exists (vrfy, rcpt to)
Apparetly most of email servers are trying to ping back first, to see, if you are also email server with static IP address and some "reputation?" Which of course single user, connected to random WiFi doesnt have, therefore server sends generic error instead.

And thats where I'm giving up.