Domain Overview
DNS: ✓ 4d ago
Checker: ✓ 4d ago
cst.cam.ac.uk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-18 06:17:28 UTC · ↺ Refresh
MX Hostnames
- mx1.forwardemail.net
- mx2.forwardemail.net
MX Priorities
- mx1.forwardemail.net: 10
- mx2.forwardemail.net: 20
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 138.197.213.185 ↩ mx1.forwardemail.net
- 121.127.44.56 ↩ mx1.forwardemail.net
- 2a02:6ea0:d71e::2 ↩ mx1.forwardemail.net
- 2604:a880:2:d0::306:1 ↩ mx1.forwardemail.net
- 121.127.44.59 ↩ mx2.forwardemail.net
- 104.248.224.170 ↩ mx2.forwardemail.net
- 2a02:6ea0:d71e::1 ↩ mx2.forwardemail.net
- 2604:a880:400:d1::cd:9001 ↩ mx2.forwardemail.net
SOA Record
Raw SOA
dns0.cl.cam.ac.uk hostmaster.cl.cam.ac.uk 2026041054 3600 1800 604800 1200
Primary NS (mname)
dns0.cl.cam.ac.uk
Admin Email (rname)
hostmaster@cl.cam.ac.uk
Serial
2026041054
Refresh
3600s
Retry
1800s
Expire
604800s
Minimum TTL
1200s
Nameservers (NS)
auth0.dns.cam.ac.uk
dns1.cl.cam.ac.uk
ns1.mythic-beasts.com
dns0.eng.cam.ac.uk
ns2.ic.ac.uk
ns3.mythic-beasts.com
dns0.cl.cam.ac.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf1.cl.cam.ac.uk include:servers.mcsv.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; fo=0:1:s:d
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- forward-email-site-verification=HoQ4Z2VpZe
- google-site-verification=rzZH3jiFGsuDcK9QwSEQjf0Xe9hzS51BLbo-6780cS8
- google-site-verification=FYGafqLU7-pe1UH1tI9Kwd0jzOOTN6wehXqyzFauMsE
- University of Cambridge, Computer Science and Technology
- SPFv=spf1 include:_spf1.cl.cam.ac.uk include:servers.mcsv.net ~all
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