Email Security Analysis of rbc.com
Complete verification of rbc.com's SPF, DKIM, DMARC, and MTA-STS records. Find out if this domain is protected against email spoofing.
Last updated: April 15, 2026
SPF
OKv=spf1 mx exists:%{i}.spf.hc391-17.ca.iphmx.com exists:%{i}.spf.hc490-56.ca.iphmx.com exists:%{i}.spf.hc859-0.ca.iphmx.com ip4:142.245.10.0/28 ip4:170.175.30.0/28 include:spf.protection.outlook.com -allDKIM
OKSelectors: s1, s2DMARC
OKv=DMARC1;p=reject;fo=1;rua=mailto:dmarc_rua@emaildefense.proofpoint.com;ruf=mailto:dmarc_ruf@emaildefense.proofpoint.comMX
OKmx2.hc391-17.ca.iphmx.com, mx1.hc391-17.ca.iphmx.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
The results above are updated daily. For an instant check of rbc.com, run a live analysis.
Analyze rbc.com liveGuides 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.