Could not connect to the SMTP host

Hi guys,

I am scratching my head on this one. I am getting the error message below.
I have doubled check username/password settings. I have checked with server admin to ensure IP address is whitelisted and I have tweaked SMTP Restriction settings, but nothing seems to work. Any ideas?

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WordPress: 5.3.2
WordPress MS: No
PHP: 7.2.24
WP Mail SMTP: 1.8.1

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
Host: server1.digitalopps.com
Port: 465
SMTPSecure: ssl
SMTPAutoTLS: bool(true)
SMTPAuth: bool(true)

Server:
OpenSSL: OpenSSL 1.0.2t 10 Sep 2019
Apache.mod_security: No
SMTP Debug:
2019-12-30 16:41:46 Connection: opening to ssl://server1.digitalopps.com:465, timeout=300, options=array ()

2019-12-30 16:41:47 Connection failed. Error #2: stream_socket_client(): unable to connect to ssl://server1.digitalopps.com:465 (Connection refused) [/home/beveragelawbiz/public_html/wp-includes/class-smtp.php line 298]

2019-12-30 16:41:47 SMTP ERROR: Failed to connect to server: Connection refused (111)

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