Domain host
How to add MX, TXT and CNAME records in IONOS
Web host and registrar. DNS is edited per domain under Domains and SSL, and CNAME records live on subdomains.
Which email provider are you setting up?
- Fastmail Fastmail on IONOS
- Google Workspace Google Workspace on IONOS
- Hostinger Email Hostinger Email on IONOS
- iCloud+ Custom Email Domain iCloud+ Custom Email Domain on IONOS
- Microsoft 365 Microsoft 365 on IONOS
- Migadu Migadu on IONOS
- Namecheap Private Email Namecheap Private Email on IONOS
- Proton Mail Proton Mail on IONOS
- Rackspace Email Rackspace Email on IONOS
- Titan Email Titan Email on IONOS
- Zoho Mail Zoho Mail on IONOS
Find the DNS editor
- Sign in at login.ionos.com, select Menu, then Domains and SSL.
- Under Actions for your domain, select the gear icon, then DNS.
What goes in each field
| Record | Host field | Value field |
|---|---|---|
| MX | Host name | Points to + Priority |
| TXT | Host name | Value |
| CNAME | Host name | Alias |
- For your bare domain, MX: enter @ in Host name; TXT: leave Host name empty; CNAME: leave Host name empty.
- For other names, type only the part before your domain (for example _dmarc). IONOS adds your domain automatically.
Adding a record at IONOS
MX record
- Select Add record, then the MX section.
- Enter @ as Host name, the mail server in Points to, and the Priority. Choose 1 hour for TTL.
- Select Save.
- If other MX records are listed, delete each one with the Delete record (trash can) icon.
TXT record
- Select Add record, then the TXT section.
- Leave Host name empty for your bare domain, paste the Value, and choose a TTL.
- Select Save.
CNAME record
- Select Subdomains, then Add subdomain, and enter the record's name (for example autodiscover).
- Under Actions for the new subdomain, select the gear icon, then DNS.
- Select Add record, then the CNAME section.
- Enter the target in the Alias box, tick the I am aware disclaimer if it appears, and select Save.
IONOS gotchas
IONOS DNS: questions
How do I add an MX record in IONOS?
Sign in at login.ionos.com, select Menu, then Domains and SSL. Under Actions for your domain, select the gear icon, then DNS. Select Add record, then the MX section. Enter @ as Host name, the mail server in Points to, and the Priority. Choose 1 hour for TTL. Select Save. If other MX records are listed, delete each one with the Delete record (trash can) icon.
How do I add a TXT record in IONOS?
Sign in at login.ionos.com, select Menu, then Domains and SSL. Under Actions for your domain, select the gear icon, then DNS. Select Add record, then the TXT section. Leave Host name empty for your bare domain, paste the Value, and choose a TTL. Select Save.
What goes in the Host name field at IONOS?
Leave it empty for records on your bare domain, such as MX and SPF. For the others, enter only the part before your domain, for example _dmarc. IONOS adds your domain automatically.