Did some stracing.

 $Net::SSLeay::trace = 2;
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DEBUG: .../IO/Socket/SSL.pm:539: socket not yet connected
DEBUG: .../IO/Socket/SSL.pm:541: socket connected
DEBUG: .../IO/Socket/SSL.pm:563: ssl handshake not started
DEBUG: .../IO/Socket/SSL.pm:605: not using SNI because openssl is too 
+old
DEBUG: .../IO/Socket/SSL.pm:650: set socket to non-blocking to enforce
+ timeout=120
DEBUG: .../IO/Socket/SSL.pm:673: ssl handshake in progress
DEBUG: .../IO/Socket/SSL.pm:683: waiting for fd to become ready: SSL w
+ants a read first
DEBUG: .../IO/Socket/SSL.pm:703: socket ready, retrying connect
DEBUG: .../IO/Socket/SSL.pm:1779: SSL connect attempt failed

DEBUG: .../IO/Socket/SSL.pm:1784: SSL connect attempt failed error:140
+90086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify fai
+led
DEBUG: .../IO/Socket/SSL.pm:669: fatal SSL error: SSL connect attempt 
+failed error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certif
+icate verify failed
DEBUG: .../IO/Socket/SSL.pm:1768: IO::Socket::IP configuration failed
ERROR: Died at ./invite.pl line 11.
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