trello.com email security: SPF, DKIM & DMARC
Is trello.com spoofable? See trello.com's SPF, DKIM, DMARC and MTA-STS records and find out if this domain is protected against email spoofing.
Last updated: June 3, 2026
SPF
OKv=spf1 include:_spf.google.com include:_spf.salesforce.com include:spemail.trello.com include:cust-spf.exacttarget.com include:amazonses.com -allDKIM
OKSelectors: googleDMARC
OKv=DMARC1; p=reject; sp=quarantine; adkim=r; aspf=r; fo=1; pct=100; rua=mailto:dmarc_rua@emaildefense.proofpoint.com,mailto:dmarc-rua@abuse.atlassian.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com,mailto:dmarc-ruf@abuse.atlassian.com;MX
OKmxb-001d9801.gslb.pphosted.com, mxa-001d9801.gslb.pphosted.comRecommendations
1Add 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.
Run a live analysis
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Analyze trello.com liveFrequently asked questions about trello.com
Is trello.com spoofable?
No. trello.com is protected against email spoofing with a robust configuration. Email security score: 90/100 (grade A).
Does trello.com have an SPF record?
Yes, trello.com publishes an SPF record (-all qualifier).
What is trello.com's DMARC record?
trello.com publishes a DMARC record (_dmarc.trello.com) with a p=reject policy.
Does trello.com use DKIM?
Yes, DKIM signatures were detected for trello.com.
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Guides to understand these results
SPF Guide
Understand how SPF defines which servers are authorized to send emails for a domain.
DKIM Guide
Discover how DKIM cryptographically signs your emails to guarantee their authenticity.
DMARC Guide
Learn how DMARC orchestrates SPF and DKIM to protect your domain.
MTA-STS Guide
Learn how MTA-STS enforces TLS encryption to protect your emails in transit.
SPF vs DKIM vs DMARC
Compare the three protocols and understand how they work together.