TimeOutError when trying to initiate smtplib.SMTP

[thecosmos]

So I am try to make SMTP connection to a host received by MX query of its domain. But when I do

smtplib.SMTP('aspmx.l.google.com')

or even

smtplib.SMTP_SSL('aspmx.l.google.com')

, it raises following TimeOutError.

TimeoutError: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

I am trying hard to figure out what could go wrong. I have even tried doing this on my cloud VPS instances but its still the same.