How to Troubleshoot Gmail SMTP Connection Issues with CodeIgniter's Email Library?

Sending Email with Gmail SMTP Using CodeIgniter's Email Library

When utilizing Gmail SMTP with CodeIgniter's email class, errors may arise due to connection issues. To resolve these, follow these steps:

Troubleshooting

Error: Connection Timed Out

This error occurs when connecting to port 465 of gmail's SMTP server via SSL fails. To rectify this:

• Configure Port: Correctly set the 'smtp_port' parameter to '465' for SSL connections.

Error: SSL Operation Failed

This issue can arise when attempting to use port 25 or 587. To address this:

• Use SSL Port: Ensure the 'smtp_port' parameter is set to '465' or '587,' depending on your port configuration.
• Enable TLS/SSL: Verify that 'smtp_crypto' is set to 'tls' or 'ssl' in your configuration.

Code Sample with SMTP Configuration

The following modified code snippet illustrates the correct SMTP configuration:

$config = Array(
    'protocol' => 'smtp',
    'smtp_host' => 'ssl://smtp.googlemail.com',
    'smtp_port' => 465,
    'smtp_user' => 'xxx',
    'smtp_pass' => 'xxx',
    'mailtype' => 'html',
    'charset' => 'iso-8859-1'
);
$this->load->library('email', $config);
$this->email->set_newline("\r\n");

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