warnerbros.com
Needs work, with 2 things to fix
warnerbros.com scored 72/100 (grade C). The main issues are more than one SPF record and DKIM key shorter than 2048 bits. Detected senders: Microsoft 365.
Checked 2026-10-04 02:16 UTC · fresh check
Merge the SPF records into one
warnerbros.com must publish exactly one SPF record. Delete all existing v=spf1 records and publish this one, which keeps every active mechanism they listed. Changes: Removed duplicate include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email. Added include:spf.protection.outlook.com for Microsoft 365. Replaced ~all with -all so mail from servers not listed is rejected.
warnerbros.com
Some DNS providers want “@” here instead of the full domain.
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:warnerbros.com._nspf.vali.email include:spf.protection.outlook.com -allv=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
v=spf1 include:warnerbros.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~allHow 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 warnerbros.com goes to warnerbros-com.mail.protection.outlook.com. Most hosted providers make that one name highly available; if you run your own server, consider a backup MX.
SPFWho may send as you?More than one SPF recordFailing
- Fail: More than one SPF record
warnerbros.com publishes 2 SPF records. RFC 7208 treats that as a permanent error, so SPF fails for every message. Merge them into a single record.
How to fix this
DKIMAre your emails signed?DKIM key shorter than 2048 bitsNeeds attention
- Warning: DKIM key shorter than 2048 bits
k1 (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
warnerbros.com publishes a DKIM key under selector1, k1, k2, k3, s1, s2, mail.
DMARCWhat happens to fakes?DMARC policy is quarantine; consider rejectInfo
- Info: DMARC policy is quarantine; consider reject
Failing mail goes to spam rather than being refused. When reports show no legitimate failures, reject gives the strongest protection.
How to fix this
AlignmentDoes it match your From?SPF alignment is unknownInfo
- Info: SPF alignment is unknown
The SPF record of warnerbros.com is invalid (spf.multiple), so receivers return a permanent error for every message and SPF cannot authenticate any sender for DMARC. DMARC depends on DKIM until the record is fixed.
BIMICan inboxes show your logo?No BIMI recordInfo
- Info: No BIMI record
No BIMI record at default._bimi.warnerbros.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 MTA-STS recordInfo
- Info: No MTA-STS record
No MTA-STS record at _mta-sts.warnerbros.com. 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.warnerbros.com. TLS-RPT (RFC 8460) tells senders where to send daily reports about failed encrypted deliveries to you.
How to fix this
Other fixes
Strengthen the DMARC policyTXT
Rejects mail that fails DMARC, the strongest protection against spoofing.
_dmarc.warnerbros.com
Some DNS providers want just “_dmarc” here.
v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email,mailto:postmaster@warnerbros.com; adkim=r; aspf=r
v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email,mailto:postmaster@warnerbros.com; ruf=mailto:Njk0@ruf.vali.email
Publish the MTA-STS recordTXT
Tells sending servers that warnerbros.com publishes an MTA-STS policy at https://mta-sts.warnerbros.com/.well-known/mta-sts.txt. Change the id whenever the policy file changes.
_mta-sts.warnerbros.com
Some DNS providers want just “_mta-sts” here.
v=STSv1; id=202610040216
Host the MTA-STS policy filepolicy-file
Serve this file over HTTPS with a valid certificate for mta-sts.warnerbros.com. It lists your MX hosts and starts in testing mode; switch to mode: enforce once TLS-RPT reports show no failures.
https://mta-sts.warnerbros.com/.well-known/mta-sts.txt
version: STSv1 mode: testing mx: warnerbros-com.mail.protection.outlook.com max_age: 604800
Set up a TLS report addressinstruction
Sending servers will report TLS failures when delivering to warnerbros.com, 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.warnerbros.com
- Pick an address that will receive TLS reports: a mailbox you read (for example tls-reports@warnerbros.com, created first) or a TLS reporting service. 2. Publish a TXT record at _smtp._tls.warnerbros.com 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.warnerbros.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://warnerbros.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.warnerbros.com with v=BIMI1, l= set to the logo URL and a= set to the certificate URL.