cloudflare.com
Live email deliverability and anti-spoofing audit. Every value below was read from public DNS at the moment this page was generated.
96/100 — This domain is configured correctly for both sending and receiving. Accepts mail · Protected against spoofing
Findings
-
mta sts
No MTA-STS policy, so inbound mail can be downgraded to an unencrypted connection.
Fix: Publish _mta-sts.cloudflare.com and host a policy at https://mta-sts.cloudflare.com/.well-known/mta-sts.txt.
-
mx
4 mail exchangers published.
5 mxa-canary.global.inbound.cf-emailsecurity.net, 5 mxb-canary.global.inbound.cf-emailsecurity.net, 10 mxa.global.inbound.cf-emailsecurity.net, 10 mxb.global.inbound.cf-emailsecurity.net
-
spf
SPF is published and enforcing.
v=spf1 ip4:199.15.212.0/22 ip4:173.245.48.0/20 include:_spf.google.com include:spf1.mcsv.net include:spf.mandrillapp.com include:mail.zendesk.com include:stspg-customer.com include:_spf.salesforce.com -all
-
dmarc
DMARC is enforcing with p=reject.
v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r; pct=100; rua=mailto:a1c47f179bc04efd8ee4dcd4d85dfc65@dmarc-reports.cloudflare.net,mailto:rua@cloudflare.com
-
dkim
DKIM keys found for 3 selectors.
k1._domainkey, s1._domainkey, mandrill._domainkey
-
bimi
BIMI is published; supporting clients can show your logo.
v=BIMI1; l=https://www.cloudflare.com/cloudflare_1171114652.svg; a=https://www.cloudflare.com/cloudflare_1171114652.pem
-
dnssec
DNSSEC is validating, so these records cannot be silently tampered with in transit.
AD flag set
Records
| MX | 5 mxa-canary.global.inbound.cf-emailsecurity.net5 mxb-canary.global.inbound.cf-emailsecurity.net10 mxa.global.inbound.cf-emailsecurity.net10 mxb.global.inbound.cf-emailsecurity.net |
|---|---|
| SPF | v=spf1 ip4:199.15.212.0/22 ip4:173.245.48.0/20 include:_spf.google.com include:spf1.mcsv.net include:spf.mandrillapp.com include:mail.zendesk.com include:stspg-customer.com include:_spf.salesforce.com -all |
| DMARC | v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r; pct=100; rua=mailto:a1c47f179bc04efd8ee4dcd4d85dfc65@dmarc-reports.cloudflare.net,mailto:rua@cloudflare.com |
| DKIM selectors | k1, s1, mandrill |
| MTA-STS | not published |
| TLS-RPT | not published |
| BIMI | published |
| DNSSEC | validating |
Same data, as JSON, in one request. No SMTP probing, no stored recipient data, 250 free calls a month.
curl "https://mailgrade.dev/v1/domain?domain=cloudflare.com"
Also available: /v1/verify?email=… for individual addresses, and
/v1/verify/batch for lists.