Is sheffield.ac.uk a valid email domain?
Mail for sheffield.ac.uk 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 reject.
Check an email address at sheffield.ac.uk
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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 | alt1.aspmx.l.google.com | 142.250.147.26, 2a00:1450:4025:c01::1a |
| 5 | alt2.aspmx.l.google.com | 172.253.152.26, 2a00:1450:4010:c22::1b |
| 10 | alt4.aspmx.l.google.com | 192.178.158.26, 2404:6800:4013:813::1b |
| 10 | alt3.aspmx.l.google.com | 192.179.20.27, 2404:6800:4000:1027::1b |
SPF
Record published
v=spf1 ip4:143.167.0.0/16 ip4:95.172.88.0/22 ip4:130.88.36.5 ip4:80.93.168.194 ip4:85.92.81.226 ip4:146.177.26.90/31 ip4:146.177.26.108/31 ip4:81.17.56.1 ip4:94.23.120.168 ip4:149.56.182.220 ip4:35.242.247.107 ip4:34.107.8.58 ip4:212.227.126.128/25 ip4:82.165.159.0/26 ip4:212.227.15.0/25 ip4:212.227.17.0/27 ip4:217.72.192.64/26 ip4:74.121.48.4 ip4:31.221.91.141 ip4:212.54.136.59 ip4:31.221.72.237 ip4:35.177.177.249 ip4:35.178.89.45 ip4:50.56.130.220/30 ip4:207.97.204.96/29 ip4:146.20.14.104/30 ip4:164.177.132.168/30 ip4:35.234.108.85/32 ip4:34.90.200.156/32 ip4:35.204.47.209/32 ip4:46.249.61.0/24 include:_spf.google.com include:wpm.flywire.com include:spf.mailanyone.net include:spf.mandrillapp.com include:shops.shopify.com -all
DMARC
Policy: reject
v=DMARC1; p=reject; sp=quarantine; rua=mailto:dmarc-rua@dmarc.service.gov.uk,mailto:re+fgkd33bleer@dmarc.postmarkapp.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
sheffield.ac.uk has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as sheffield.ac.uk must have SPF and DKIM set up correctly.
✨ Report summary
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Sign up to get a report summary →Frequently asked questions
- Is sheffield.ac.uk a valid email domain?
- Yes. sheffield.ac.uk 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 sheffield.ac.uk a disposable email domain?
- No. sheffield.ac.uk 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 sheffield.ac.uk?
- 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 sheffield.ac.uk have SPF and DMARC?
- SPF: yes, ending -all. DMARC: yes, policy reject.