Learn how to fix SPF Permerror caused by too many DNS lookups. Improve email deliverability and avoid DMARC failures with step-by-step fixes and tools.

Email authentication is a powerful method to ensure your emails are legitimate when they reach the recipients. Learn how to check and authenticate your emails effectively.

SPF macros are character sequences that can be used to simplify an SPF record by replacing mechanisms defined within the said DNS record, as explained under RFC 7208, section 7.