How Do Firewall Settings Affect Email Deliverability?
Incorrect or overly strict firewall settings can lead to legitimate marketing emails being blocked or filtered out, negatively impacting your email deliverability rates. To avoid this, it's essential to: - Whitelist trusted email servers and IP addresses. - Ensure that your firewall settings allow for proper SMTP communication. - Implement DKIM, SPF, and DMARC records to authenticate your emails.