What potential issues can arise when using fsocket to establish a socket connection with a mail server for sending emails?

One potential issue that can arise when using fsocket to establish a socket connection with a mail server for sending emails is that the connection may not be secure. To solve this issue, you can use SSL/TLS encryption to secure the connection with the mail server. 

$socket = fsockopen('ssl://mail.example.com', 465, $errno, $errstr, 30);
if (!$socket) {
    echo "Error: $errno - $errstr\n";
} else {
    // Send email using the secure socket connection
    fclose($socket);
}

Keywords

fsocket socket connection mail server sending emails potential issues

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