I can succesfully validate newly generated email adress (check if mx record exist) if it’s a Gmail, but when checking Hotmail adress I get the following:
b’550 5.7.1 Service unavailable. Client host 23.129.xx.xxx blocked using Spamhaus.
I am using a VPN IP so I understand that it has to do something with that, but Gmail-adresses is no problem for this.
What solutions do I have to be able to bypass a Spamfilter like this?
If I have to use a proxy, what kind of Proxy do I need for email validating?
I am validating with Python 3.8.3 in Ubuntu 20.04.