Find whether one sender, one mailbox or all domain mail is affected.
What to do
- Check webmail Inbox, Spam, filters and forwarders.
- Check mailbox quota.
- Ask the sender for any bounce error.
- For all-domain problems, check MX records and recent nameserver changes.
- Test from an external address and share results with support.
Check the result
Mail in webmail but not your app suggests app configuration.
If you need a hand
Share private message details only through support. Do not delete MX records without confirming the intended mail provider.
Open a support request. Include the affected domain and what you tried. Leave out passwords, full payment details, and private keys.