Yes. You can verify any @Cms.gov address in real time with a direct SMTP handshake that provides 99.7% accuracy. Cms.gov is operated by Centers for Medicare & Medicaid Services, runs 4 mail servers, enforces 3 of 3 authentication standards, and is currently responding to SMTP.
Every check returns one of three clear outcomes so you know exactly what to do with the address.
The mailbox exists and accepts mail. Send with confidence, the address is deliverable.
The mailbox does not exist, is disposable, or will hard-bounce. Remove it to protect your sender reputation.
The server is catch-all or greylisting, so existence cannot be confirmed. Send selectively and watch engagement.
cms.gov publishes 4 MX records. The primary mail exchanger is primary.us.etp.fireeyegov.com, hosted by fireeyegov.com, and it is currently reachable and answering SMTP. Mail is routed through these servers in priority order, lowest number first.
| Priority | Hostname | IP | Status |
|---|---|---|---|
| 10 | primary.us.etp.fireeyegov.com | 15.200.32.5 | Reachable |
| 20 | alt1.us.etp.fireeyegov.com | 15.200.32.6 | Reachable |
| 30 | alt2.us.etp.fireeyegov.com | 15.200.32.4 | Reachable |
| 40 | alt3.us.etp.fireeyegov.com | 15.200.32.6 | Reachable |
220 2.0.0 mx.us.email.fireeyegov.com ESMTPYes. cms.gov is a valid email domain, operated by Centers for Medicare & Medicaid Services. Addresses are persistent and real mail reaches a genuine recipient. Individual mailboxes still go stale, so verify each one before you send.
A live SMTP handshake connects to Cms.gov's mail server and asks whether the mailbox exists using the RCPT TO command, without ever transmitting a message. The recipient never sees the check.
Each address runs through 30+ checks including SMTP existence, catch-all detection, role-account filtering, and disposable matching. The same engine has verified billions of addresses since 2012.
Every unverified address is a gamble. Here is what happens when you skip verification and mail a list that has not been cleaned.
People leave companies. Verification flags cms.gov mailboxes deactivated since you collected them.
Expired or full cms.gov inboxes hard-bounce. A live SMTP check catches them before you hit send.
Low bounce rates keep you trusted by cms.gov mail servers and the major mailbox providers.
Verified contacts mean your CRM, lead scoring, and routing all run on addresses that reach a person.
Cms.gov is Centers for Medicare & Medicaid Services, registered through get.gov and first seen Jun 20, 2001.
The domain cms.gov belongs to the Centers for Medicare and Medicaid Services (CMS), a federal agency within the Department of Health and Human Services. Based in Baltimore, Maryland, CMS administers Medicare, Medicaid, the Children's Health Insurance Program (CHIP), and the Health Insurance Marketplace, serving over 150 million Americans.
As a federal .gov domain, cms.gov complies with CISA Binding Operational Directive 18-01, requiring DMARC, SPF, and DKIM. CMS is heavily targeted by phishing campaigns due to its role in healthcare benefits administration. Fraudulent emails impersonating CMS can be used to steal beneficiary information or conduct healthcare fraud.
CMS mail servers do not operate as catch-all systems. The SMTP infrastructure validates recipients and rejects messages to nonexistent addresses. Given the volume of legitimate correspondence CMS handles, its servers employ greylisting, rate limiting, and connection-level filtering to manage inbound traffic effectively.
Email deliverability to cms.gov requires full authentication compliance. HHS-managed federal email gateways apply comprehensive spam filtering, content inspection, and sender reputation analysis. Senders must maintain valid SPF, DKIM, and DMARC records and a clean sending history for successful delivery to CMS staff inboxes.
Upload a CSV or TXT list of Cms.gov addresses to the bulk email verifier. Every address runs through a live SMTP handshake plus catch-all, role-account and disposable detection, and you download a clean list when processing completes. For real-time checks at signup, use the real-time email verification API.
CSV or TXT with one email per line. No formatting needed.
Each Cms.gov address is checked with a live server handshake.
Get a verified list with status codes, risk flags, and catch-all detection.
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Everything about verifying email at this domain.
Yes, cms.gov is a valid official government email domain operated by Centers for Medicare & Medicaid Services. It is used by government employees and officials for official correspondence.
No, cms.gov is not a disposable or temporary email provider. It is an official government domain used for legitimate government communications and operations.
cms.gov uses mail servers managed by Centers for Medicare & Medicaid Services. Check the MX records section above for specific server details and authentication configuration.
Yes, cms.gov addresses accept incoming email. Government mail servers typically enforce strict spam filtering, authentication checks (SPF, DKIM, DMARC), and content scanning. Ensure your sending domain is properly authenticated.
Use BulkEmailChecker to verify cms.gov addresses. Government domains may have specific SMTP behaviors including greylisting and strict rate limiting. Our tool handles these provider-specific configurations automatically.
Upload a CSV or TXT list to the bulk email verifier. Every address runs through 30+ checks including SMTP existence, catch-all detection, role-account, and disposable matching. Processing time depends on list size.
99.7% accurate using a direct SMTP handshake with cms.gov's mail servers, the same engine that has verified billions of addresses since 2012.
Other government email domains we have audited.