Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rhs.org.uk
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-27 09:47:27 UTC · ↺ Refresh
MX Hostnames
- eu-smtp-inbound-2.mimecast.com
- eu-smtp-inbound-1.mimecast.com
MX Priorities
- eu-smtp-inbound-1.mimecast.com: 10
- eu-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 104.18.9.251 (no PTR)
- 104.18.8.251 (no PTR)
- 2606:4700::6812:9fb (no PTR)
- 2606:4700::6812:8fb (no PTR)
Mail Server IPs
- 195.130.217.201 ↩ eu-smtp-inbound-1.mimecast.com
- 91.220.42.241 ↩ eu-smtp-inbound-2.mimecast.com
- 91.220.42.201 ↩ eu-smtp-inbound-1.mimecast.com
- 195.130.217.211 ↩ eu-smtp-inbound-1.mimecast.com
- 91.220.42.211 ↩ eu-smtp-inbound-1.mimecast.com
- 195.130.217.241 ↩ eu-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
blue.foundationdns.com dns.cloudflare.com 2400088016 10000 2400 604800 1800
Primary NS (mname)
blue.foundationdns.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400088016
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
blue.foundationdns.net
blue.foundationdns.org
blue.foundationdns.com
SPF Record
✓ Strict (-all)
v=spf1 include:eu._netblocks.mimecast.com include:_spf.createsend.com a:mail.rhs.org.uk ip4:217.168.249.66 ip4:3.11.129.102 ip4:62.133.16.237 ip4:80.6.91.150 ip4:89.185.150.155 ip4:52.30.213.6 ip4:185.58.86.155 ip4:185.58.85.155 ip4:20.157.28.2 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1:d:s;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- google-site-verification=49JoGool-MGMlHl0gloUvlbiSwrT3-qX7gS3ssmdS10
- google-site-verification=PLKzFeGFNP6v7Q1nayw2bIlDoABals1CZkhdR6vnV4s
- SPFv=spf1 include:eu._netblocks.mimecast.com include:_spf.createsend.com a:mail.rhs.org.uk ip4:217.168.249.66 ip4:3.11.129.102 ip4:62.133.16.237 ip4:80.6.91.150 ip4:89.185.150.155 ip4:52.30.213.6 ip4:185.58.86.155 ip4:185.58.85.155 ip4:20.157.28.2 -all
- MS=ms92134148
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for rhs.org.uk
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits