phpmailer smtp error could not connect to smtp host - An easy fix!
SOLVED] PHPMailer SMTP Error: Could not connect to SMTP host | SMTP Error: Could not authenticate - YouTube
SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting - Software Support - PKP Community Forum
Connection failed. Error #2: stream_socket_enable_crypto(): Peer certificate CN=`mail.icar.gov.in' did not match expected CN=`00.000.0.000' - Software Support - PKP Community Forum