Incorrect or duplicate MX, SPF, DKIM or DMARC records can cause email problems.
Step-by-step guide
- Open DNS management for the relevant domain name.
- Compare the current records with the values that are actually required.
- Check IPv4, IPv6 and email records where applicable.
- Save only the necessary corrections.
- Test again using an external DNS resolver and allow for the TTL.
Which value should you enter?
| Record type | DNS |
| Value | depending on the situation |
| TTL | Use the default value unless a provider specifies otherwise. |
What should you consider?
- First check the MX records and priorities.
- Check that the mail host has a valid A or AAAA record.
- Restore the old values if the change was not intended for email.
DNS changes take time
After saving, an old value may temporarily remain in cache. Therefore, check not only in your browser but also with an external DNS checker.
Frequently asked questions
When will a DNS change become visible?
This depends on the TTL and provider caches. The change is often visible within a few minutes, but old responses may be retained for longer.
Can I undo a DNS change?
Yes. Restore the previous value and save again. This correction may also temporarily be affected by DNS cache.
Do I need to change the TTL?
Usually not. For a planned migration, you can lower the TTL in advance so later changes are retrieved more quickly.
Still need help?
Email support@mosthosted.com and include your domain name, the required record and the value.