What are the implications of not finding an MX record for a domain when using the checkdnsrr function in PHP?

If the checkdnsrr function in PHP does not find an MX record for a domain, it means that the domain does not have a mail server configured to receive emails. This can result in email delivery failures when trying to send emails to that domain. To solve this issue, you can check for the presence of an MX record before attempting to send an email to that domain. 

$domain = 'example.com';

if (checkdnsrr($domain, 'MX')) {
    // MX record found, proceed with sending email
} else {
    echo 'No MX record found for domain: ' . $domain;
}

Keywords

MX record checkdnsrr function domain implications PHP

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