Holmes Security Coach – Technical

Technical checks

This page will give explanation about the executed checks by the Holmes Security Coach regarding the technical elements of an e-mail. Every check is further explained by the meaning of the result and how to be interpreted.

  • Probably safe

    There are no guaranties but based on our checks the e-mail seems to be reliable. Are you doubting the authenticity of this e-mail? Please report the message using the Life Line. You will receive feedback automatically.

  • Watch out!

    We have detected signals that you might be dealing with phishing, but we cannot be sure. Are you doubting the authenticity of this message, use the Life Line in the Holmes Security Coach to report the e-mail.

  • Potential threat!

    It is very likely that you are dealing with phishing. Report the received e-mail with the Life Line. When your system administrator recognizes the e-mail as phishing too, the e-mail will be blocked for your colleagues.

SPF

SPF stands for Sender Policy Framework and it is a method to validate the sender of an e-mail. It is a method to prevent spammers to send e-mails on behalf of an e-mail address that is not theirs. In the SPF is noted who and what systems are allowed to send e-mails on behalf of a certain e-mail domain.

 

SPF is Red, what does this mean?
The check is failed, so the sender could not be validated. We recommend you to use the Life Line. Are you absolutely sure the sender is legitimate and can be trusted. Report the sender the SPF record is not set correctly. The better the SPF record, the better we can use SPAM filters and this way we can make it more difficult for cyber criminals. No clue how to do this or what to tell the sender of the e-mail? Ask us for help by sending an e-mail to support@holmes.nu and together we will send the e-mail. Let’s make the internet a safer place!

 

SPF is Orange, what does this mean?
The check could not be executed because there is no SPF to be validated. It was impossible to verify the sender. Are there more checks red or orange? We recommend you to use the Life Line.

 

SPF is Green, what does this mean?
The checks are passed, and the sender was verified. This check is passed but be aware of the other checks.

DKIM

DKIM
DKIM stands for DomainKeys Identified Mail and it is an authentication technique to prevent against e-mail falsification. It is a method where the receiver and the sender exchange information to verify the authenticity of the e-mail. The sender adds a DKIM signature to the e-mail and the receiver checks the authenticity and validity of the signature.

 

DKIM is Red, what does this mean?
The check is failed, so the e-mail could not be validated. We recommend you to use the Life Line. Are you absolutely sure the sender is legitimate and can be trusted. Report the sender the DKIM signature is not set correctly. The better the DKIM signature, the better we can use SPAM filters and this way we can make it more difficult for cyber criminals. No clue how to do this or what to tell the sender of the e-mail? Ask us for help by sending an e-mail to support@holmes.nu and together we will send the e-mail. Let’s make the internet a safer place!

 

DKIM is Orange, what does this mean?
The check could not be executed because there is no DKIM to be validated. It was impossible to verify the e-mail. Are there more checks red or orange? We recommend you to use the Life Line.

 

DKIM is Green, what does this mean?
The checks are passed, and the e-mail was verified. This check is passed but be aware of the other checks.

DMARC

DMARC stand for Domain Message Authentication Reporting & Conformance and is a validating method to protect the e-mail domain. DMARC uses the SPF and DKIM to prevent against phishing, spoofing and other forms of cybercrime. DMARC provides instruction to the receiving e-mail server about how to handle e-mails where the SPF and DKIM is not set correctly.

 

DMARC is Red, what does this mean?
The check is failed, so the e-mail could not be validated. We recommend you to use the Life Line. Are you absolutely sure the sender is legitimate and can be trusted. Report the sender the DMARC is not set correctly. The better the DMARC, the better we can use SPAM filters and this way we can make it more difficult for cyber criminals. No clue how to do this or what to tell the sender of the e-mail? Ask us for help by sending an e-mail to support@holmes.nu and together we will send the e-mail. Let’s make the internet a safer place!

 

DMARC is Orange, what does this mean?
The check could not be executed because there is no DMARC to be validated. It was impossible to verify the e-mail. Are there more checks red or orange? We recommend you to use the Life Line.

 

DMARC is Green, what does this mean?
The checks are passed, and the e-mail was verified. This check is passed but be aware of the other checks.