How can one troubleshoot email delivery issues related to server location and spam filters?

To troubleshoot email delivery issues related to server location and spam filters, you can start by checking if your server's IP address is blacklisted on any spam databases. You can also ensure that your email server's domain has proper SPF and DKIM records set up to improve deliverability. Additionally, you can review your email content and formatting to avoid triggering spam filters. 

// Check if server's IP address is blacklisted
$ip_address = $_SERVER['SERVER_ADDR'];
$blacklist_check = file_get_contents("https://www.spamhaus.org/query/ip/$ip_address");
if (strpos($blacklist_check, "LISTED") !== false) {
    echo "Server IP address is blacklisted!";
}

// Check SPF and DKIM records
$domain = "yourdomain.com";
$spf_record = dns_get_record("yourdomain.com", DNS_TXT);
$dkim_record = dns_get_record("default._domainkey.yourdomain.com", DNS_TXT);
if (empty($spf_record) || empty($dkim_record)) {
    echo "SPF or DKIM records are missing!";
}

// Review email content and formatting
$email_content = "Your email content here";
if (strpos($email_content, "viagra") !== false) {
    echo "Email content may trigger spam filters!";
}

Keywords

PHP email delivery server location spam filters troubleshooting

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