Good, with 1 thing to fix

zoho.com scored 88/100 (grade B). The main issue is no DKIM key found for the common selectors. Detected senders: Zoho Mail.

Checked 2026-10-04 02:17 UTC · fresh check

5 passed1 needs attention0 failing2 for informationDetected senders: Zoho Mail

All checks

MXCan servers find your inbox?No issues foundPass

Nothing to report.

SPFWho may send as you?No issues foundPass

Nothing to report.

DKIMAre your emails signed?No DKIM key found for the common selectorsNeeds attention

Warning: No DKIM key found for the common selectors
None of the 47 selectors probed under zoho.com publish a DKIM key. DNS cannot list selectors, so a key under a custom selector may exist: find the s= value in the DKIM-Signature header of a message you sent and check that selector. If DKIM is not set up, enable it at each service that sends mail for zoho.com.

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.zoho.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.zoho.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?TLS-RPT is configuredPass

Pass: TLS-RPT is configured
TLS reports will be sent to mailto:tlsaggregation@zoho.com.

How to fix it

Enable DKIM for Zoho Mailinstruction

Zoho Mail generates the DKIM key for each account, so the exact record must come from Zoho Mail. Without DKIM, mail it sends for zoho.com cannot pass DMARC through DKIM.

Applies to: zoho._domainkey.zoho.com

In Zoho Mail, enable DKIM signing for zoho.com: account-specific: copy the CNAME/TXT from the Zoho Mail dashboard. Publish exactly the record Zoho Mail shows (TXT or CNAME) at the host name it gives, then turn signing on. Instructions: https://www.zoho.com/mail/help/adminconsole/dkim-configuration.html

Publish the MTA-STS recordTXT

Tells sending servers that zoho.com publishes an MTA-STS policy at https://mta-sts.zoho.com/.well-known/mta-sts.txt. Change the id whenever the policy file changes.

TypeTXT

Name / Host

_mta-sts.zoho.com

Some DNS providers want just “_mta-sts” here.

Value

v=STSv1; id=202610040217

Host the MTA-STS policy filepolicy-file

Serve this file over HTTPS with a valid certificate for mta-sts.zoho.com. It lists your MX hosts and starts in testing mode; switch to mode: enforce once TLS-RPT reports show no failures.

Location

https://mta-sts.zoho.com/.well-known/mta-sts.txt

Contents

version: STSv1
mode: testing
mx: smtpin.zoho.com
mx: smtpin2.zoho.com
mx: smtpin3.zoho.com
max_age: 604800

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.zoho.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://zoho.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.zoho.com with v=BIMI1, l= set to the logo URL and a= set to the certificate URL.