Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sigmanu.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 16:15:12 UTC · ↺ Refresh
MX Hostnames
- sigmanu-org.mail.protection.outlook.com
MX Priorities
- sigmanu-org.mail.protection.outlook.com: 0
A / AAAA Records
- 9.169.165.9 (no PTR)
Mail Server IPs
- 52.101.9.17 (no PTR)
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f802::2 ↩ mail-sj2pr05cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.hover.com dnsmaster.hover.com 1756476021 1800 900 604800 300
Primary NS (mname)
ns1.hover.com
Admin Email (rname)
dnsmaster@hover.com
Serial
1756476021
Refresh
1800s
Retry
900s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1.hover.com
ns2.hover.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx ip4:99.198.105.183 ip4:50.78.233.97 ip4:199.244.107.170 include:spf.protection.outlook.com include:spf.sendinblue.com include:outboundmail.blackbaud.net include:emsd1.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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- SPFv=spf1 mx ip4:99.198.105.183 ip4:50.78.233.97 ip4:199.244.107.170 include:spf.protection.outlook.com include:spf.sendinblue.com include:outboundmail.blackbaud.net include:emsd1.com ~all
- MS=ms57052572
- Sendinblue-code:59b3a18744d24f960bd78166f34f87c5
- apple-domain-verification=HML5kiBpKnR4d6em
- bjs0s5pce19snpmvlkvpiana4l
- google-site-verification=tGN6p7xXlToh6GLmY456cSUKgsm8xs-Z0_1WZqipfac
- google-site-verification=Ckox1qx-dBp8AXi3jplC1QugmfhaxYUy2Dy2RmLvqBU
- facebook-domain-verification=qk5pjwhjiz6r0dfmbrqp7a7v6muiqj
- 9snxxth90nn4dxw2xzp3jb5bhchh2mzf
- 96w0174g8ywsjy8qzrc7m8rtk813hqly
- logmein-verification-code=5dd96883-493a-4892-84ab-cbeffc9a4da2
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