DNS setup guide
Your domain needs a few records. The wizard shows the exact values — this page explains what each does.
| Record | What it does |
|---|---|
MX → 10 mail.numail.app |
Tells the world to deliver your mail to numail. |
CNAME …_domainkey |
DKIM signing key — receivers use this to verify your outbound mail is authentic. |
| CNAME (return-path) | Handles bounce/delivery reporting for our outbound relay. |
TXT _dmarc |
Tells receivers to quarantine mail that fails the checks above. |
SRV _autodiscover._tcp (optional) |
Lets classic Outlook find your mail server automatically when someone adds a mailbox on your domain. Value: 0 0 443 mail.numail.app. |
Tips:
- Enter the Name column exactly as shown. Some providers auto-append your domain — if the wizard shows
t1._domainkeyand your provider showst1._domainkey.yourdomain.com, that's correct. - Remove any old MX records from your previous provider, or mail delivery will be split between the two.
- If verification stays red after an hour, check for typos and trailing spaces; TXT values must be quoted exactly once.