SMTP Security: do your mail servers support encryption?
Before you tell the world to only deliver to you over TLS (that's what MTA-STS does), you should confirm your own servers can actually do it. SMTP Security checks each one.
- Where to find it
- Monitoring & Risk → SMTP Security
What you'll see
- How many of your mail servers have STARTTLS confirmed active, with an Active or Not Supported badge per server and the TLS version it negotiated.
- A server DMARCS hasn't been able to check yet (no MX found, check pending, or check failed) is shown as not checked, not as a failure, so a domain mid-scan never looks worse than it is.
- Expand a row to see the individual MX records behind it, each with its location and provider (Google Workspace, Microsoft 365 and so on).
How it fits with the other TLS pages
| Page | Question it answers |
|---|---|
| SMTP Security | Can my servers accept encrypted connections? |
| TLS Reports | Are other servers actually managing to deliver to me encrypted? |
| Hosted MTA-STS | How do I require encryption rather than hope for it? |
Still need a hand?
Email support@dmarcs.com, call +971 4 240 4441, or open a ticket from Support inside the app.