Peer Certificate error

Hello I recently moved my site to a new server and cannot send mail using smtp mailer any longer I get the following error:

Versions:
WordPress: 5.7
WordPress MS: No
PHP: 7.4.16
WP Mail SMTP: 2.7.0

Params:
Mailer: smtp
Constants: Yes
ErrorInfo: SMTP Error: Could not connect to SMTP host.
Host: smtp.office365.com
Port: 587
SMTPSecure: tls
SMTPAutoTLS: bool(true)
SMTPAuth: bool(true)

Server:
OpenSSL: OpenSSL 1.1.1d 10 Sep 2019

Debug:
Mailer: Other SMTP SMTP Error: Could not connect to SMTP host.

SMTP Debug:
2021-04-13 16:11:51 Connection: opening to smtp.office365.com:587, timeout=300, options=array()
 2021-04-13 16:11:51 Connection: opened
 2021-04-13 16:11:51 SERVER -> CLIENT: 220-hit-aws-web01.hitmediasolutions.com.au ESMTP Exim 4.94 #2 Wed, 14 Apr 2021 02:11:51 +1000 220-We do not authorize the use of this system to transport unsolicited, 220 and/or bulk e-mail.
 2021-04-13 16:11:51 CLIENT -> SERVER: EHLO lewis.hackfath.com
 2021-04-13 16:11:51 SERVER -> CLIENT: 250-hit-aws-web01.hitmediasolutions.com.au Hello lewis.hackfath.com [172.31.31.24]250-SIZE 52428800250-8BITMIME250-PIPELINING250-X_PIPE_CONNECT250-AUTH PLAIN LOGIN250-STARTTLS250 HELP
 2021-04-13 16:11:51 CLIENT -> SERVER: STARTTLS
 2021-04-13 16:11:51 SERVER -> CLIENT: 220 TLS go ahead
 2021-04-13 16:11:51 Connection failed. Error #2: stream_socket_enable_crypto(): Peer certificate CN=‘hit-aws-web01.hitmediasolutions.com.au' did not match expected CN=‘smtp.office365.com' [/home/hackfath/public_html/lewis/wp-includes/PHPMailer/SMTP.php line 467]
 SMTP Error: Could not connect to SMTP host.
 2021-04-13 16:11:51 CLIENT -> SERVER: QUIT
 2021-04-13 16:11:51 
 2021-04-13 16:11:51 
 2021-04-13 16:11:51 Connection: closed
 SMTP Error: Could not connect to SMTP host

• This topic was modified 3 years, 10 months ago by lewishackfath.