// how to fix
How to fix email problems
Your test or scan found a problem? Find the matching guide below: what it means, why it matters, and how to fix it step by step.
DNS 33
DMARC 28
SPF 28
DKIM 26
Reputation 24
Bounce 16
Security 16
Blacklist 13
Gmail 13
Content 12
Mailing list 11
Spam score 10
Headers 9
Reverse DNS 7
Mail server 4
Microsoft 365 4
MX 4
Outlook 4
TLS 2
Apple 1
BIMI 1
E-commerce 1
Google Workspace 1
WordPress 1
Yahoo 1
Zoho 1
2 guides · tag TLS
| Problem | In short | Tags | |
|---|---|---|---|
| Protect your incoming mail with MTA-STS and TLS-RPT | MTA-STS forces other servers to use encryption when they deliver email to your domain. TLS-RPT sends you reports when that fails. Both are optional but recommended. | Fix it | |
| Emails sent without TLS encryption (STARTTLS) | Your server delivered the email in clear text, without encryption. Gmail flags this with a red padlock and expects bulk senders to use TLS. Turn on STARTTLS. | Fix it |
Not sure what is wrong?
Send a test email or scan your domain: the report tells you which problem you have.