NRPE errors regarding SSL handshake

Error:

CHECK_NRPE: Error - Could not complete SSL handshake.

If you are trying to work with Nagios and setup NRPE, when performing check_nrpe -H hostname you might get the above error. Usually it happens when you have added another IP to the list of allowed hosts and you have added a SPACE after the coma. Just remove the space after the coma so your /etc/nagios/nrpe.cfg contains a line like this:

allowed_hosts=127.0.0.1,XXX.XXX.XXX.XXX

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