Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tcd.ie
Yes
✓ Yes
Outlook
No
Yes
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 12:17:09 UTC · ↺ Refresh
MX Hostnames
- tcd-ie.mail.protection.outlook.com
MX Priorities
- tcd-ie.mail.protection.outlook.com: 10
A / AAAA Records
- 15.197.242.139 ↩ afef5696a78b683ae.awsglobalaccelerator.com
- 3.33.249.246 ↩ afef5696a78b683ae.awsglobalaccelerator.com
Mail Server IPs
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
SOA Record
Raw SOA
auth-ns1.tcd.ie hostmaster.tcd.ie 2018052664 10800 3600 2419200 300
Primary NS (mname)
auth-ns1.tcd.ie
Admin Email (rname)
hostmaster@tcd.ie
Serial
2018052664
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
auth-ns3.tcd.ie
auth-ns1.tcd.ie
auth-ns2.tcd.ie
auth-ns2.ucd.ie
SPF Record
✓ Strict (-all)
v=spf1 ip4:134.226.14.40 ip4:134.226.251.0/21 include:spf.protection.outlook.com include:_spf.google.com include:netaffinity.net include:_spf.eu.messagegears.net include:mh.blackboard.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=none; rua=mailto:[email protected], mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected], mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
11 records- docusign=08237f08-1bc7-4ced-866f-2f091ca1e091
- SPFv=spf1 ip4:134.226.14.40 ip4:134.226.251.0/21 include:spf.protection.outlook.com include:_spf.google.com include:netaffinity.net include:_spf.eu.messagegears.net include:mh.blackboard.com -all
- dell-technologies-domain-verification=tcd.ie_e68f91b5-b6b5-4a56-8196-a2821b60705d_1760793096
- amazonses:94slst6Hz90gKbyQVRj88Jrtkk//vCnWShfHzXbjfRU=
- google-site-verification=UBheMj-WKimynXvOEXFLk1-PUd8B6S91wIea98PFIuA
- brevo-code:70df7540dafa8ea20f0eccbc493bb5ae
- LS0wGCXdOiSqamEg/ogaY8TFrKtppR0sIAYcLNO7M38AoQDAXMqFhjVv3zazNI4Tb/BvzZONCn8xReirme7RYQ==
- google-site-verification=535E0mjM6BC8LKGeWZPiDTUfBWWVRO6df5G5Gxz9CYE
- d365mktkey=jHusVOIxhFdqyiqVNzZIAZbf5JO9KYHH2xAmqQ4FhSAx
- klaviyo-site-verification=Tvbv8j
- docusign=7a164078-c20a-4d3e-a1ce-87b780e3850e
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