Is cmu.edu a valid email domain?
Mail for cmu.edu is handled by 5 servers at Google (Gmail or Google Workspace), with aspmx.l.google.com tried first.
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 cmu.edu
Type the name before the @ to check a full address. No account needed.
MX records (Google (Gmail or Google Workspace))
| Priority | Mail server | Resolves to |
|---|---|---|
| 1 | aspmx.l.google.com | 142.251.127.26, 2a00:1450:4001:c21::1b |
| 5 | alt1.aspmx.l.google.com | 142.250.147.27, 2a00:1450:4025:c01::1b |
| 5 | alt2.aspmx.l.google.com | 172.253.152.27, 2a00:1450:4010:c22::1a |
| 10 | alt4.aspmx.l.google.com | 192.178.158.26, 2404:6800:4013:813::1b |
| 10 | alt3.aspmx.l.google.com | 192.179.20.26, 2404:6800:4000:1027::1a |
SPF
Record published
v=spf1 include:_spf.cmu.edu ~all
DMARC
Policy: none
v=DMARC1;p=none;sp=none;rua=mailto:report-dmarc@andrew.cmu.edu
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
cmu.edu looks like an organisation's own domain. Those are usually good leads, and also where bounces come from: people change jobs and mailboxes get closed. Checking each address, including whether the server accepts any recipient, avoids damaging your sender reputation.
Sender authentication
cmu.edu 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
Sign up to get a report summary: a plain-English read of this domain's mail setup and what to do next.
Sign up to get a report summary →Frequently asked questions
- Is cmu.edu a valid email domain?
- Yes. cmu.edu publishes 5 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is cmu.edu a disposable email domain?
- No. cmu.edu 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 cmu.edu?
- aspmx.l.google.com (priority 1); alt1.aspmx.l.google.com (priority 5); alt2.aspmx.l.google.com (priority 5); alt4.aspmx.l.google.com (priority 10); alt3.aspmx.l.google.com (priority 10).
- Does cmu.edu have SPF and DMARC?
- SPF: yes, ending ~all. DMARC: yes, policy none.