Need Help With Email Settings

I recently changed my email provider from my hosting carrier to Register.com, but have now lost the ability to send or receive emails from Zencart. Does anyone have the correct settings for Register.com?

Here are my current settings (that don't work). email addresses have been removed
VQdxxime@2019
Title Value
E-Mail Transport Method smtpauth
Send E-Mails true
E-Mail Linefeeds LF
Enable HTML Emails? true
Email Archiving Active? true
E-Mail Friendly-Errors true
Email Address (Displayed to Contact you)
Email Address (sent FROM)
Emails must send from known domain? No
Email Admin Format? TEXT
Send Copy of Order Confirmation Emails To
Send Copy of Create Account Emails To - Status
Send Copy of Create Account Emails To
Send Copy of Customer GV Send Emails To - Status
Send Copy of Customer GV Send Emails To
Send Copy of Admin GV Mail Emails To - Status
Send Copy of Customer Admin GV Mail Emails To
Send Copy of Admin Discount Coupon Mail Emails To - Status
Send Copy of Customer Admin Discount Coupon Mail Emails To
Send Copy of Admin Orders Status Emails To - Status 1
Send Copy of Admin Orders Status Emails To
Send Notice of Pending Reviews Emails To - Status 0
Send Notice of Pending Reviews Emails To
Set "Contact Us" Email Dropdown List
Contact Us - Show Store Name and Address 1
Send Low Stock Emails 0
Send Low Stock Emails To >
Display "Newsletter Unsubscribe" Link? true
Audience-Select Count Display false
SMTP Email Account Mailbox name.domain
SMTP Email Account Password *************
SMTP Email Mail Host mail.domain
SMTP Email Mail Server Port 465
Convert currencies for Text emails £,£:€,€:®,®:™,™

Here is error I am getting

ERROR: Failed sending email to: "xxxxxxxx" with subject: "A view from tghe fringe" SMTP connect() failed. https://github.com/PHPMailer/PHPMail...roubleshooting

There are a few possibilities of the cause(s) of the issue. Some may be eliminated by providing even a smidge more of information.

Searching the internet for email settings associated with your host, it appears that the server information to be entered to support smtpauth would be to use the domain name of your domain prefixed with "mail.". Thus would have mail.yourdomain.

As for potential other issues, there may not be a domain name reference to your mail host (MX record) or perhaps simply the email address populated in ZC may need to be in the form of:
Name to be displayed <email_address>

The last potential reason is not clear as a possible solution because of the complete removal of information in the OP of the settings instead of display of the format used in each such field.

OK. Sorry 'bout that....I thought I wasn't supposed to share proprietary info. Here ya go

Title Value Action
E-Mail Transport Method smtpauth
Send E-Mails true
E-Mail Linefeeds LF
Enable HTML Emails? true
Email Archiving Active? true
E-Mail Friendly-Errors true
Email Address (Displayed to Contact you) [email protected]
Email Address (sent FROM) [email protected]
Emails must send from known domain? No
Email Admin Format? TEXT
Send Copy of Order Confirmation Emails To Phil<[email protected]>, Pam<[email protected]>
Send Copy of Create Account Emails To - Status 0
Send Copy of Create Account Emails To Phil<[email protected]>, Pam<[email protected]>
Send Copy of Customer GV Send Emails To - Status 0
Send Copy of Customer GV Send Emails To Phil<[email protected]>, Pam<[email protected]>
Send Copy of Admin GV Mail Emails To - Status 0
Send Copy of Customer Admin GV Mail Emails To Phil<[email protected]>, Pam<[email protected]>
Send Copy of Admin Discount Coupon Mail Emails To - Status 0
Send Copy of Customer Admin Discount Coupon Mail Emails To Phil<[email protected]>, Pam<[email protected]>
Send Copy of Admin Orders Status Emails To - Status 1
Send Copy of Admin Orders Status Emails To Phil<[email protected]>, Pam<[email protected]>
Send Notice of Pending Reviews Emails To - Status 0
Send Notice of Pending Reviews Emails To Phil<[email protected]>, Pam<[email protected]>
Set "Contact Us" Email Dropdown List Store <[email protected]>,Phil <[email protected]>,Pam <[email protected]>
Contact Us - Show Store Name and Address 1
Send Low Stock Emails 0
Send Low Stock Emails To Phil<[email protected]>, Pam<[email protected]>
Display "Newsletter Unsubscribe" Link? true
Audience-Select Count Display false
SMTP Email Account Mailbox [email protected]
SMTP Email Account Password *************
SMTP Email Mail Host mail.heirloomstocherish.com
SMTP Email Mail Server Port 465
Convert currencies for Text emails &pound;,£:&euro;,€:&reg;,®:&trade;,™