cdnvideo.ru
Needs work, with 2 things to fix
cdnvideo.ru scored 69/100 (grade C). The main issues are DMARC policy is none and external DMARC report address is not authorized, plus 1 more. Detected senders: Google Workspace.
Checked 2026-10-04 02:14 UTC · fresh check
Strengthen the DMARC policy
Quarantines 25% of mail that fails DMARC, a safe first step: check the reports for legitimate senders that fail before going further.
_dmarc.cdnvideo.ru
Some DNS providers want just “_dmarc” here.
v=DMARC1; p=quarantine; pct=25; rua=mailto:dmarc_rua@cdnvideo.com; adkim=r; aspf=r
v=DMARC1;p=none;rua=mailto:dmarc_rua@cdnvideo.com
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?No issues foundPass
Nothing to report.
SPFWho may send as you?SPF ends in neutral (?all)Needs attention
- Warning: SPF ends in neutral (?all)
"?all" tells receivers to treat mail from unlisted servers as neither pass nor fail, so SPF gives no protection. End the record with "-all" or "~all".
DKIMAre your emails signed?DKIM key publishedPass
- Pass: DKIM key published
cdnvideo.ru publishes a DKIM key under google.
DMARCWhat happens to fakes?DMARC policy is noneNeeds attention
- Warning: DMARC policy is none
A none policy only monitors: mail that fails DMARC is still delivered, so anyone can spoof the domain. Once reports show your legitimate senders pass, move to quarantine and then reject.
How to fix this - Warning: External DMARC report address is not authorized
Reports go to cdnvideo.com, which is outside cdnvideo.ru. RFC 7489 requires that domain to publish a valid v=DMARC1 TXT record at cdnvideo.ru._report._dmarc.cdnvideo.com; without it receivers will not send you aggregate reports. Your report provider normally publishes this for you.
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.cdnvideo.ru. 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 MTA-STS recordInfo
- Info: No MTA-STS record
No MTA-STS record at _mta-sts.cdnvideo.ru. MTA-STS (RFC 8461) makes sending servers require TLS and a valid certificate when delivering to you, which blocks downgrade attacks.
How to fix this
TLS-RPTWill you hear about failures?No TLS-RPT recordInfo
- Info: No TLS-RPT record
No TLS reporting record at _smtp._tls.cdnvideo.ru. TLS-RPT (RFC 8460) tells senders where to send daily reports about failed encrypted deliveries to you.
How to fix this
Other fixes
Publish the MTA-STS recordTXT
Tells sending servers that cdnvideo.ru publishes an MTA-STS policy at https://mta-sts.cdnvideo.ru/.well-known/mta-sts.txt. Change the id whenever the policy file changes.
_mta-sts.cdnvideo.ru
Some DNS providers want just “_mta-sts” here.
v=STSv1; id=202610040214
Host the MTA-STS policy filepolicy-file
Serve this file over HTTPS with a valid certificate for mta-sts.cdnvideo.ru. It lists your MX hosts and starts in testing mode; switch to mode: enforce once TLS-RPT reports show no failures.
https://mta-sts.cdnvideo.ru/.well-known/mta-sts.txt
version: STSv1 mode: testing mx: aspmx.l.google.com mx: alt1.aspmx.l.google.com mx: alt2.aspmx.l.google.com mx: aspmx2.googlemail.com mx: aspmx3.googlemail.com mx: aspmx4.googlemail.com mx: aspmx5.googlemail.com max_age: 604800
Set up a TLS report addressinstruction
Sending servers will report TLS failures when delivering to cdnvideo.ru, which you need before enforcing MTA-STS. The address must accept TLS reports; a DMARC report address does not necessarily do so.
Applies to: _smtp._tls.cdnvideo.ru
- Pick an address that will receive TLS reports: a mailbox you read (for example tls-reports@cdnvideo.ru, created first) or a TLS reporting service. 2. Publish a TXT record at _smtp._tls.cdnvideo.ru with the value v=TLSRPTv1; rua=mailto:<that address>.
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.cdnvideo.ru
- 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://cdnvideo.ru/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.cdnvideo.ru with v=BIMI1, l= set to the logo URL and a= set to the certificate URL.