SMTP Problem

Hello. i tried to used SMTP but there's an error. Please see below


2023-03-10 11:36:40 Connection: opening to smtp.acumbamail.com:25, timeout=300, options=array()
2023-03-10 11:36:42 Connection failed. Error #2: stream_socket_client(): unable to connect to smtp.acumbamail.com:25 (Connection refused) [/home/admin3ping/public_html/vendor/phpmailer/phpmailer/src/SMTP.php line 389]
2023-03-10 11:36:42 SMTP ERROR: Failed to connect to server: Connection refused (111)
SMTP connect() failed. https://github.com/PHPMailer/PHPMail...roubleshootinghttps://forum.flynax.com/attachment....tid=4809&stc=1

and after changing the port from :25 to :587


2023-03-10 12:03:55 Connection: opening to smtp.acumbamail.com:587, timeout=300, options=array()
2023-03-10 12:03:55 Connection: opened
2023-03-10 12:03:55 SERVER -> CLIENT: 220-HOST ESMTP Exim 4.96 #2 Fri, 10 Mar 2023 20:03:55 +0800 220-We do not authorize the use of this system to transport unsolicited, 220 and/or bulk e-mail.
2023-03-10 12:03:55 CLIENT -> SERVER: EHLO DOMAIN
2023-03-10 12:03:55 SERVER -> CLIENT: 250-HOST Hello DOMAIN [67.227.250.159]250-SIZE 52428800250-8BITMIME250-PIPELINING250-PIPECONNECT250-AUTH PLAIN LOGIN250-STARTTLS250 HELP
2023-03-10 12:03:55 CLIENT -> SERVER: STARTTLS
2023-03-10 12:03:55 SERVER -> CLIENT: 220 TLS go ahead
2023-03-10 12:03:55 Connection failed. Error #2: stream_socket_enable_crypto(): Peer certificate CN=`HOST' did not match expected CN=`smtp.acumbamail.com' [/home/admin3ping/public_html/vendor/phpmailer/phpmailer/src/SMTP.php line 468]
SMTP Error: Could not connect to SMTP host. Connection failed. stream_socket_enable_crypto(): Peer certificate CN=`HOST' did not match expected CN=`smtp.acumbamail.com'
2023-03-10 12:03:55 CLIENT -> SERVER: QUIT
2023-03-10 12:03:55
2023-03-10 12:03:55
2023-03-10 12:03:55 Connection: closed
SMTP connect() failed. https://github.com/PHPMailer/PHPMail...roubleshooting

I suggest you create a new ticket with the problem we will solve it.