Is bt.com a valid email domain?
bt.com has working mail routing: 1 MX record pointing to Microsoft (Outlook or Microsoft 365), led by btgroupcloud-mail-onmicrosoft-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 bt.com
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MX records (Microsoft (Outlook or Microsoft 365))
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | btgroupcloud-mail-onmicrosoft-com.mail.protection.outlook.com | 52.101.103.36, 52.101.209.28 |
SPF
Record published
v=spf1 include:spf.protection.outlook.com include:www.thrs.bt.com include:smtp1.bt.com ip4:62.7.242.136/29 ip4:62.239.224.234/31 ip4:62.239.224.236/31 ip4:62.239.224.98/31 ip4:193.113.108.40/31 ip4:212.140.59.179 ip4:212.140.56.164 ip4:212.49.128.65 ip4:200.47.123.3 ip4:147.149.196.177 ip4:147.149.100.81 ip4:147.149.196.181 ip4:147.149.100.78 ~all
DMARC
Policy: reject
v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com,mailto:dmarc.ag@bt.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com,mailto:dmarc.fr@bt.com
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
The domain accepts mail, but whether a given person's mailbox exists depends on that organisation. Company domains often have staff who left, role mailboxes like info@ and sales@, and sometimes catch-all rules that accept everything. Verify the individual address before you send.
Sender authentication
bt.com has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as bt.com must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is bt.com a valid email domain?
- Yes. bt.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 bt.com a disposable email domain?
- No. bt.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 bt.com?
- btgroupcloud-mail-onmicrosoft-com.mail.protection.outlook.com (priority 10).
- Does bt.com have SPF and DMARC?
- SPF: yes, ending ~all. DMARC: yes, policy reject.