Why is PHPMailer Failing to Connect to SMTP on GoDaddy\'s Linux Server?

PHPMailer GoDaddy Server SMTP Connection Refused

This user experienced a sudden failure in PHPMailer functionality after their site was migrated from a Windows to a Linux server on GoDaddy. The error message they received was:

SMTP -> ERROR: Failed to connect to server: Connection refused (111)SMTP Connect() failed.

Despite verifying their settings, the issue persisted. They confirmed that their GoDaddy account remained unchanged, and tech support could find no server settings issues.

Suspecting a server-related cause, they investigated further. They discovered that using the localhost as the SMTP Host value, while commenting out various authentication settings like SMTPAuth, Username, etc., resolved the issue.

$mail2->Host = localhost;
//$mail2->SMTPAuth = false;
//$mail2->Username = '[email protected]';
//$mail2->Password = '*******';

//$mail2->SMTPSecure = 'tls';

//$mail2->Port = 465;

The user concluded that the issue had something to do with the transition to a Linux server and suggested that the tech support personnel may not be aware of certain server settings. They recommended investigating further if anyone else encounters similar problems.

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