DKIM/SPF Checker can help you check your DKIM and SPF settings through Gmail, Hotmail and Yahoo mail server. The DKIM/SPF Gmail, Hotmail and Yahoo checking results are for referrences only.Please send the email with subject 'DKIM/SPF Check Request' to any of the following email address, and reload DKIM/SPF Checking Results after couple of minutes. Click the DKIM/SPF Results to see the detailed mail server Authentication-Results, the description of DKIK/SPF Authentication-Results from Gmail, Hotmail and Yahoo are not exact same.
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DomainKeys Identified Mail (DKIM) is an email authentication method designed to detect email spoofing. It allows the receiver to check that an email claimed to have come from a specific domain was indeed authorized by the owner of that domain.Sender Policy Framework (SPF) is an email validation protocol designed to detect and block email spoofing by providing a mechanism to allow receiving mail exchangers to verify that incoming mail from a domain comes from an IP Address authorized by that domain's administrators.