All data shown is public and sourced from DNS.
Last checked less than a minute ago
Your domain has basic email authentication in place. Consider strengthening your configuration for better protection.
Add aggregate reporting (rua) to receive DMARC reports
DMARC improvement
protonmail.com has a DMARC record but no reporting configured, limiting visibility into authentication results. SPF is published with a soft fail policy (~all), flagging unauthorized senders without blocking them. A few improvements would strengthen protonmail.com's email authentication posture.
27 / 50 points
DMARC record is valid but no reporting email is configured.
v=DMARC1; p=quarantine; fo=1; aspf=s; adkim=s;
Without a reporting address (rua), you won't receive aggregate reports from email providers. These reports show who is sending email as your domain and whether authentication passes or fails.
Great! You have a DMARC policy in place. Now start receiving reports in your own monitoring inbox to track email authentication results and identify potential issues.
5 / 20 points
Missing required 'l' (logo) URL.
v=BIMI1; l=; a=;
Missing logo URL (l=)
No certificate URL provided (a=). Optional when using self-asserted logos.
26 / 30 points
SPF record is valid.
v=spf1 include:_spf.protonmail.ch ~all
Syntax Check
OK
DNS Lookup Count
2 / 10 max
Root-level mechanisms requiring DNS queries: 1.
Void Lookups
0 / 2 max
Soft fail: Mark emails from unauthorized servers as suspicious but don't reject
Grouped by DNS record source (includes and sub-includes)
This record also contains:
SPF record found
protonmail.com
TXT Record
v=spf1 ip4:185.70.40.0/24 ip4:185.70.41.0/24 ip4:185.70.43.0/24 ip4:79.135.106.0/24 ip4:79.135.107.0/24 ip4:109.224.244.0/24 include:_spf2.protonmail.ch ~all
Processed recursively per RFC 7208
SPF record found
_spf.protonmail.ch
TXT Record
v=spf1 ip4:85.9.206.169 ip4:85.9.210.45 ip4:188.165.51.139 ip4:57.129.93.249 ~all
Processed recursively per RFC 7208
10 / 10 points
TLS-RPT Reporting Configured
v=TLSRPTv1; rua=https://reports.proton.me/reports/smtptls
https://reports.proton.me/reports/smtptls
MTA-STS Policy Configured
v=STSv1; id=190906205100Z;
190906205100Z
The check you just ran shows your current configuration. But DNS records change, sometimes without you knowing. A well-meaning IT change, a third-party provider update, or an unauthorized modification can break your email delivery overnight.
Configuration Drift
IT changes that accidentally break authentication
Provider Updates
Third-party services changing their SPF includes
Unauthorized Changes
Attackers modifying records to send as you
DMARCTrust monitors your DNS records continuously. When something changes, you get an email alert with exactly what changed and why it matters. No more surprises when customers complain their emails bounced.
Run a free email authentication check (DMARC, SPF, BIMI).
We will generate a shareable URL for your domain.
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Discover how other organizations configure their email authentication
Frequently checked
Reject policy + valid SPF
Also using quarantine
Showing domains checked by our users. All data is from public DNS records.
We analyze your domain's email authentication: DMARC policy and alignment, SPF record and includes, and BIMI logo and certificate status when present.
Healthy authentication improves delivery and blocks spoofing. Major inbox providers increasingly expect DMARC and aligned SPF/DKIM from senders.
This check shows a snapshot. With DMARCTrust, you get continuous monitoring of your DMARC reports and DNS records, with instant alerts when something changes.
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