Is arm.com a valid email domain?
arm.com has working mail routing: 1 MX record pointing to Microsoft (Outlook or Microsoft 365), led by arm-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 none.
Check an email address at arm.com
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MX records (Microsoft (Outlook or Microsoft 365))
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | arm-com.mail.protection.outlook.com | 52.101.185.24, 52.101.209.28 |
SPF
Record published
v=spf1 include:_spf-a.arm.com include:_spf-b.arm.com include:_spf-c.arm.com -all
DMARC
Policy: none
v=DMARC1; p=none; rua=mailto:dmarc-reports@arm.com; ruf=mailto:dmarc-reports@arm.com; sp=none
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
arm.com has DMARC in monitoring mode (p=none). It collects reports but does not yet block spoofed mail, so the domain is easier to impersonate.
✨ Report summary
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Sign up to get a report summary →Frequently asked questions
- Is arm.com a valid email domain?
- Yes. arm.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 arm.com a disposable email domain?
- No. arm.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 arm.com?
- arm-com.mail.protection.outlook.com (priority 10).
- Does arm.com have SPF and DMARC?
- SPF: yes, ending -all. DMARC: yes, policy none.