Is capitalone.com a valid email domain?
capitalone.com can receive email. It publishes 2 mail servers, run by Proofpoint, and the first choice is mx0a-001b4103.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 capitalone.com
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MX records (Proofpoint)
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | mx0a-001b4103.pphosted.com | 148.163.133.70 |
| 10 | mx0b-001b4103.pphosted.com | 148.163.137.70 |
SPF
Record published
v=spf1 ip4:148.163.151.254 ip4:148.163.155.198 ip4:148.163.137.70 ip4:148.163.133.70 ip4:205.220.175.235 ip4:205.220.163.236 ip4:27.126.144.0/21 ip4:64.106.247.198 ip4:66.70.7.91 ip4:68.233.76.14 ip4:97.107.118.192/26 ip4:63.150.74.35 include:gspf.capitalone.com include:gspf2.capitalone.com include:spf1.capitalone.com include:spf2.capitalone.com include:mir.capitalone.com include:sf.capitalone.com include:sf2.capitalone.com ~all
DMARC
Policy: reject
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:capital-one@rua.agari.com; ruf=mailto:capital-one@ruf.agari.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
capitalone.com has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as capitalone.com must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is capitalone.com a valid email domain?
- Yes. capitalone.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 capitalone.com a disposable email domain?
- No. capitalone.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 capitalone.com?
- mx0a-001b4103.pphosted.com (priority 10); mx0b-001b4103.pphosted.com (priority 10).
- Does capitalone.com have SPF and DMARC?
- SPF: yes, ending ~all. DMARC: yes, policy reject.