Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dau.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 02:53:21 UTC · ↺ Refresh
MX Hostnames
- mail1.dau.edu
- mail2.dau.edu
MX Priorities
- mail2.dau.edu: 20
- mail1.dau.edu: 10
A / AAAA Records
- 20.185.21.166 (no PTR)
Mail Server IPs
- 50.229.6.158 ↩ mail2.dau.edu
- 50.229.6.58 ↩ mail1.dau.edu
SOA Record
Raw SOA
ns1.dau.edu dns.cloudflare.com 2399823156 10000 2400 604800 1800
Primary NS (mname)
ns1.dau.edu
Admin Email (rname)
dns@cloudflare.com
Serial
2399823156
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns2.dau.edu
ns1.dau.edu
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:50.229.6.50 ip4:50.222.2.0/24 ip4:50.229.6.0/24 ip4:149.96.193.2 ip4:149.96.192.2 include:okta.dau.edu include:spf.protection.outlook.com include:_spf.qemailserver.com include:service-now.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._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
4 records- SPFv=spf1 mx ip4:50.229.6.50 ip4:50.222.2.0/24 ip4:50.229.6.0/24 ip4:149.96.193.2 ip4:149.96.192.2 include:okta.dau.edu include:spf.protection.outlook.com include:_spf.qemailserver.com include:service-now.com -all
- _pzrwe7ekz735kd85cppmzmkwukwtjp4
- extensis-domain-verification=b124ba7a-773e-4412-b0ed-9647ddc1f8cb
- google-site-verification=Wi8UpWA1ZKbn1YMNqPpte2_3Z29Z5jqhFmZQLILDsos
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