Problem with linking store mail to my designated email address

I have problem linking my store mail to a designated email address. I check on the error log and this is what I get:

"PHP Warning: fsockopen(): Unable to connect to smtp.jadeitecove.com:465 (php_network_getaddresses: getaddrinfo for smtp.jadeitecove.com failed: Name or service not known) in /home/customer/www/jadeitecove.com/public_html/system/library/mail/smtp.php on line 133
Exception: Error: php_network_getaddresses: getaddrinfo for smtp.jadeitecove.com failed: Name or service not known (0) in /home/customer/www/jadeitecove.com/public_html/system/library/mail/smtp.php on line 259"

I use OC 4.0.2.2, and journal theme 3.2.0-rc.105.

I need help with coding to direct enquiries and sales confirmation to my designated email address
1. Direct enquiries from " Contact Us"
2. Direct sales confirmation after. "checkout"

I also need a new page to confirm that enquiries have been successfully send and order has successfully been delivered.

Please help. thank you

Feel free to drop us an email for a quick estimate: info@antropy.co.uk

just email to you. thanks

Hi,

Mail Engine: Select SMTP
SMTP Host: Enter the SMTP hostname provided by SiteGround in Site Tools > Email > Accounts > kebab menu > Mail Configuration > Manual Settings tab > Outgoing server
SMTP Username: Enter the email address
SMTP Port: 587

Would you be open to emailing me your enquiry details so we can get this sorted?

Hello there
Greetings!

I have experience with this issue and can help you resolve it. The error indicates a problem with DNS resolution for your SMTP server.
I can assist in debugging your mail configuration, ensuring proper SMTP settings, and implementing the necessary code changes to route inquiries and sales confirmations to your designated email.

Additionally, I can create a confirmation page for successful submissions.

Looking forward to connecting with you for further discussion.

Regards
Ian

Hello there
Greetings

I have reviewed your requirements and can assist in linking your store's email system to your designated email address, ensuring that inquiries from the 'Contact Us' page and sales confirmations after checkout are directed to the correct email.

Also I can help set up a confirmation page to verify the successful submission of enquiries and order delivery.

Please feel free to contact me for further discussion.

E: alanjones(dot)tis(at)gmail(dot)com
Skype: live:.cid.6a62b7b34d1aa390

Looking forward to connecting with you

Regards
Alan Jones