Is uc3m.es a valid email domain?
uc3m.es has working mail routing: 5 MX records pointing to Google (Gmail or Google Workspace), led by aspmx.l.google.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. DMARC is set to none.
Check an email address at uc3m.es
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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 | alt2.aspmx.l.google.com | 172.253.152.27, 2a00:1450:4010:c22::1a |
| 5 | alt1.aspmx.l.google.com | 142.250.147.26, 2a00:1450:4025:c01::1a |
| 10 | alt4.aspmx.l.google.com | 192.178.158.27, 2404:6800:4013:813::1a |
| 10 | alt3.aspmx.l.google.com | 192.179.20.27, 2404:6800:4000:1027::1a |
SPF
Record published
v=spf1 redirect=_spf.uc3m.es
DMARC
Policy: none
v=DMARC1; p=none; rua=mailto:mailmaster+dmarc@uc3m.es; ruf=mailto:mailmaster+dmarc@uc3m.es; fo=1
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
uc3m.es has DMARC in monitoring mode (p=none). It collects reports but does not yet block spoofed mail, so the domain is easier to impersonate.
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Sign up to get a report summary →Frequently asked questions
- Is uc3m.es a valid email domain?
- Yes. uc3m.es 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 uc3m.es a disposable email domain?
- No. uc3m.es 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 uc3m.es?
- aspmx.l.google.com (priority 1); alt2.aspmx.l.google.com (priority 5); alt1.aspmx.l.google.com (priority 5); alt4.aspmx.l.google.com (priority 10); alt3.aspmx.l.google.com (priority 10).
- Does uc3m.es have SPF and DMARC?
- SPF: yes. DMARC: yes, policy none.