Why Does My PHPMailer Get an SMTP \'connect() failed\' Error on a Shared Server?

PHPMailer SMTP Error: Password Command Fails

Question:

When using PHPMailer from a shared server, users encounter an SMTP error while attempting to send mail. Despite the script appearing correct, the error persists: "SMTP connect() failed."

Relevant Code:

$mail->Username = "[email protected]";
$mail->Password = "************";

Answer:

The issue stems from security measures implemented by Google, which serves as the SMTP server in this case. If "less secure" applications attempt to access a Gmail account or if multiple login attempts are made, Google may block the connection.

Solution:

Grant access to PHPMailer by navigating to the following links while logged into your Google account:

1. Security Activity: https://security.google.com/settings/security/activity?hl=en&pli=1
2. Allow Less Secure Apps: https://www.google.com/settings/u/1/security/lesssecureapps
3. Clear Captcha: https://accounts.google.com/b/0/DisplayUnlockCaptcha

By completing these steps, you can authorize PHPMailer to use your Gmail account and resolve the SMTP error.

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