Email Security Analysis of comet.ch

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

Last updated: April 15, 2026

92A

This domain is protected against spoofing

v=spf1 include:_u.comet.ch._spf.dmarcla.com -all

Selectors: selector1, selector2, s1, s2

v=DMARC1; p=reject; rua=mailto:60f56e230e488@ag.dmarcly.com; ruf=mailto:60f56e230e488@fo.dmarcly.com; sp=reject; adkim=s; aspf=s; pct=100; fo=1;

comet-ch.mail.protection.outlook.com

Warning

v=STSv1; id=1690285027339

1Fix your MTA-STS policy file — it could not be fetched
Your domain has an MTA-STS DNS record, but the policy file at https://mta-sts.yourdomain/.well-known/mta-sts.txt is unreachable. Without a valid policy file, MTA-STS provides no protection. Check that the subdomain mta-sts.yourdomain resolves correctly and serves the policy over HTTPS.

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

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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.