Time out

Hello Konstantin, how are you? I'm Eduardo, from Brazil, I'm trying to use your verifyEmail class but it is not working, it is throwing time out error message from the smtp server, can we fix this? Could we exchange ideas and work together to solve this problem? I think we will spend not much time on it. Send me an email "eduardobm@gmail.com". Thank you.
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Here is what I get executing example.php:

gmail-smtp-in.l.google.com: A connection attempt failed because the connected component did not respond correctly after a period of time, or a connection failed because the connected host did not respond.
alt1.gmail-smtp-in.l.google.com: (the same message)
alt2.gmail-smtp-in.l.google.com: (the same message)
alt3.gmail-smtp-in.l.google.com: (the same message)
alt4.gmail-smtp-in.l.google.com: (the same message)
All connection fails
email <eduardobm@gmail.com> valid, but not exist!

Check outbound ports in the firewall

Hello Konstantin,

I get the same message as message 2 as well as this one.

outlook-com.olc.protection.outlook.com:Connection refused
All connection fails
email <davgar2005@outlook.com> valid, but not exist!

You mentioned ports, but which ones?