Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cityofhenderson.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 10:42:48 UTC · ↺ Refresh
MX Hostnames
- cityofhenderson-com.mail.protection.outlook.com
MX Priorities
- cityofhenderson-com.mail.protection.outlook.com: 0
A / AAAA Records
- 135.84.124.41 (no PTR)
Mail Server IPs
- 52.101.9.19 ↩ mail-blapr09cu00103.inbound.protection.outlook.com
- 52.101.11.12 ↩ mail-sa9pr09cu00104.inbound.protection.outlook.com
- 52.101.8.50 ↩ mail-dm6pr09cu00202.inbound.protection.outlook.com
- 52.101.8.52 ↩ mail-ds0pr09cu00104.inbound.protection.outlook.com
- 2a01:111:f403:f90e::1 ↩ mail-sa9pr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f900::1 ↩ mail-blapr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f904::1 ↩ mail-ds0pr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f904:: ↩ mail-dm6pr09cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns01.cityofhenderson.com dnsadmin.cityofhenderson.com 1308 10800 3600 2419200 900
Primary NS (mname)
ns01.cityofhenderson.com
Admin Email (rname)
dnsadmin@cityofhenderson.com
Serial
1308
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
ns01.cityofhenderson.com
ns02.cityofhenderson.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.psm.knowbe4.com ip4:205.174.31.97/30 ip4:205.174.31.121 ip4:205.174.31.123 ip4:205.174.30.68 ip4:205.174.29.28 ip4:205.174.29.31 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; aspf=r; adkim=r; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100; ri=86400
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- MS=ms20780264
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.psm.knowbe4.com ip4:205.174.31.97/30 ip4:205.174.31.121 ip4:205.174.31.123 ip4:205.174.30.68 ip4:205.174.29.28 ip4:205.174.29.31 -all
- google-site-verification=MAX2P74N7KCXd3VoTSm8mrMzGHEVl19yfvAMjBpCvfE
- adobe-idp-site-verification=34bd697c3bac97186bbcac3ff62566b175d50d9e6279587d609b88f78060bf9e
- _globalsign-domain-verification=ghJU6y-MK2i_Gu2zqmlLSkIn4E49zN2Du4uDViXlGA
- google-site-verification=Tvbt_IeW3n75VF6z0JkC4NUbHYCF2pbaT0t9MDoV_n4
- globalsign-domain-verification=2920f70f9baaefabdbdacafa063f74f0
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