Is discovery.com a valid email domain?
discovery.com can receive email. It publishes 1 mail server, run by Microsoft (Outlook or Microsoft 365), and the first choice is discovery-com.mail.protection.outlook.com.
It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.
SPF is published and ends with ~all. DMARC is set to reject.
Check an email address at discovery.com
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MX records (Microsoft (Outlook or Microsoft 365))
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | discovery-com.mail.protection.outlook.com | 52.101.41.206, 52.101.8.5 |
SPF
Record published
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:_spf.createsend.com ~allDMARC
Policy: reject
v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email; ruf=mailto:MTE3NzE2@ruf.vali.email; fo=1; ri=3600
Disposable?
No, not on our disposable list.
Free provider?
No, not a known free provider.
What this means for your email list
What this means for addresses at this domain
Mail routing for discovery.com is healthy, so the domain is not the risk. The risk is the mailbox: outdated contacts, shared inboxes and catch-all servers. A mailbox-level check tells you which addresses are safe to send to.
Sender authentication
discovery.com has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as discovery.com must have SPF and DKIM set up correctly.
✨ Report summary
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Sign up to get a report summary →Frequently asked questions
- Is discovery.com a valid email domain?
- Yes. discovery.com publishes 1 MX record and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is discovery.com a disposable email domain?
- No. discovery.com is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for discovery.com?
- discovery-com.mail.protection.outlook.com (priority 10).
- Does discovery.com have SPF and DMARC?
- SPF: yes, ending ~all. DMARC: yes, policy reject.