criteo.com
Good, with 2 things to fix
criteo.com scored 84/100 (grade B). The main issues are DKIM key shorter than 2048 bits and SPF is close to the 10-lookup limit. Detected senders: Microsoft 365.
Checked 2026-10-04 02:04 UTC · fresh check
Reduce SPF DNS lookups
Evaluating SPF for criteo.com takes 8 DNS lookups including nested includes; receivers stop at 10 and fail SPF. No detected sending service accounts for these includes; remove each one you no longer send through: docebosaas.com, login.mail.criteo.com, et._spf.pardot.com, _spf.qualtrics.com, asp.cuenote.jp. Changes: Replaced ~all with -all so mail from servers not listed is rejected.
criteo.com
Some DNS providers want “@” here instead of the full domain.
v=spf1 include:docebosaas.com include:login.mail.criteo.com include:et._spf.pardot.com include:spf.protection.outlook.com include:_spf.qualtrics.com include:asp.cuenote.jp a:smtp.criteo.net a:jira-mail.iponweb.net ip4:178.250.1.41 ip4:178.250.2.6 ip4:167.89.19.51 ip4:212.99.44.69 ip4:212.99.44.71 -all
v=spf1 include:docebosaas.com include:login.mail.criteo.com include:et._spf.pardot.com include:spf.protection.outlook.com include:_spf.qualtrics.com include:asp.cuenote.jp a:smtp.criteo.net a:jira-mail.iponweb.net ip4:178.250.1.41 ip4:178.250.2.6 ip4:167.89.19.51 ip4:212.99.44.69 ip4:212.99.44.71 ~all
How to apply it
- Sign in where your domain’s DNS is managed. This is often where you bought the domain, such as Cloudflare, GoDaddy or Namecheap.
- Find the existing TXT record with that name and replace its value.
- Save, then come back and re-check. DNS changes can take up to a few hours to show.
All checks
MXCan servers find your inbox?Only one MX hostInfo
- Info: Only one MX host
All mail for criteo.com goes to criteo-com.o-v1.mx.microsoft. Most hosted providers make that one name highly available; if you run your own server, consider a backup MX.
SPFWho may send as you?SPF is close to the 10-lookup limitNeeds attention
- Warning: SPF is close to the 10-lookup limit
Evaluating the SPF record for criteo.com needs 8 of the 10 allowed DNS lookups. Adding one more service, or a provider growing its own record, will break SPF.
How to fix this - Info: SPF ends in softfail (~all)
"~all" is common and works well with DMARC. "-all" is stricter; switch when you are sure every sender is listed.
DKIMAre your emails signed?DKIM key shorter than 2048 bitsNeeds attention
- Warning: DKIM key shorter than 2048 bits
selector1 (1024-bit), s2 (1024-bit), mail (1024-bit) uses an RSA key below 2048 bits. Short keys can be factored and some receivers treat them as weak. Rotate to a 2048-bit key at your sending provider.
- Pass: DKIM key published
criteo.com publishes a DKIM key under selector1, selector2, k2, k3, s1, s2, mail, default.
DMARCWhat happens to fakes?No issues foundPass
Nothing to report.
AlignmentDoes it match your From?No issues foundPass
Nothing to report.
BIMICan inboxes show your logo?No BIMI recordInfo
- Info: No BIMI record
No BIMI record at default._bimi.criteo.com. BIMI is optional: it shows your logo next to your mail in supporting inboxes once DMARC is enforced.
How to fix this
MTA-STSIs mail to you encrypted?No issues foundPass
Nothing to report.
TLS-RPTWill you hear about failures?TLS-RPT is configuredPass
- Pass: TLS-RPT is configured
TLS reports will be sent to mailto:iit.ops.notifications.atp-dmarc@criteo.com.
Other fixes
Prepare BIMIinstruction
BIMI shows your logo next to messages in supporting inboxes, but only for mail that passes DMARC under an enforced policy.
Applies to: default._bimi.criteo.com
- Enforce DMARC first: p=quarantine or p=reject at 100% (no pct below 100). 2. Convert your logo to an SVG Tiny PS file and host it over HTTPS, for example https://criteo.com/bimi/logo.svg. 3. For Gmail and Apple Mail, obtain a VMC or CMC certificate for the logo. 4. Publish a TXT record at default._bimi.criteo.com with v=BIMI1, l= set to the logo URL and a= set to the certificate URL.