Email Security Analysis of grimsbypower.com

Complete verification of grimsbypower.com's SPF, DKIM, DMARC, and MTA-STS records. Find out if this domain is protected against email spoofing.

Last updated: April 15, 2026

73B

This domain is vulnerable to spoofing

v=spf1 a mx a:mail.grimsbypower.com a:emailsecurity.grimsbypower.com ip4:207.164.161.26 include:spf.protection.outlook.com -all

Selectors: selector1

Warning

v=DMARC1; p=none; rua=mailto:dmarc@grimsbypower.com; ruf=mailto:dmarc@grimsbypower.com; fo=1

grimsbypower-com.mail.protection.outlook.com

Missing

No record found

1Change your DMARC policy from p=none to p=reject to block spoofing
With p=none, your DMARC record only monitors — it doesn't actually block spoofed emails. Attackers can still send emails as your domain and they'll be delivered normally. Switching to p=reject instructs receiving servers to drop fraudulent messages before they reach the inbox.
2Add MTA-STS to enforce TLS encryption for incoming emails
Without MTA-STS, an attacker performing a man-in-the-middle attack can downgrade the connection between mail servers to plaintext, intercepting emails in transit. MTA-STS tells sending servers to only deliver via TLS with a valid certificate, preventing downgrade attacks.

If you're not sure how to apply these fixes, get in touch and we'll help you out.

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Understand how SPF defines which servers are authorized to send emails for a domain.

Discover how DKIM cryptographically signs your emails to guarantee their authenticity.

Learn how DMARC orchestrates SPF and DKIM to protect your domain.

Learn how MTA-STS enforces TLS encryption to protect your emails in transit.

Compare the three protocols and understand how they work together.