Is ibm.com a valid email domain?
ibm.com has working mail routing: 2 MX records pointing to Proofpoint, led by mx0a-001b2d05.pphosted.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 ibm.com
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MX records (Proofpoint)
| Priority | Mail server | Resolves to |
|---|---|---|
| 5 | mx0a-001b2d05.pphosted.com | 205.220.161.114 |
| 5 | mx0b-001b2d05.pphosted.com | 205.220.172.48 |
SPF
Record published
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -allDMARC
Policy: reject
v=DMARC1; p=reject; sp=none; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.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
ibm.com has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as ibm.com must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is ibm.com a valid email domain?
- Yes. ibm.com publishes 2 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is ibm.com a disposable email domain?
- No. ibm.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 ibm.com?
- mx0a-001b2d05.pphosted.com (priority 5); mx0b-001b2d05.pphosted.com (priority 5).
- Does ibm.com have SPF and DMARC?
- SPF: yes, ending -all. DMARC: yes, policy reject.