What are common SMTP errors encountered when using PHPmailer, and how can they be resolved?

One common SMTP error encountered when using PHPmailer is "SMTP Error: Could not authenticate." This error usually occurs when the username or password provided for the SMTP server is incorrect. To resolve this issue, double-check the SMTP server credentials and ensure they are correct. 

// Set SMTP server credentials
$mail->Username = 'your_smtp_username';
$mail->Password = 'your_smtp_password';
$mail->SMTPAuth = true;
$mail->SMTPSecure = 'tls';
$mail->Host = 'smtp.yourserver.com';
$mail->Port = 587;

Keywords

SMTP errors PHPmailer troubleshooting authentication configuration

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