Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
houstontx.gov
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 02:22:47 UTC · ↺ Refresh
MX Hostnames
- houstontx-gov.mail.protection.outlook.com
MX Priorities
- houstontx-gov.mail.protection.outlook.com: 10
A / AAAA Records
- 204.235.229.46 ↩ greenhoustontx.gov
Mail Server IPs
- 52.101.8.52 ↩ mail-ds0pr09cu00104.inbound.protection.outlook.com
- 52.101.11.12 ↩ mail-sa9pr09cu00104.inbound.protection.outlook.com
- 52.101.8.50 ↩ mail-dm6pr09cu00202.inbound.protection.outlook.com
- 52.101.9.19 ↩ mail-blapr09cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f904:: ↩ mail-dm6pr09cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f904::1 ↩ mail-ds0pr09cu00101.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
SOA Record
Raw SOA
cyrusoneeadns.houstontx.gov root.houstontx.gov 2011094297 10800 3600 1814400 86400
Primary NS (mname)
cyrusoneeadns.houstontx.gov
Admin Email (rname)
root@houstontx.gov
Serial
2011094297
Refresh
10800s
Retry
3600s
Expire
1814400s
Minimum TTL
86400s
Nameservers (NS)
hecexternaldns.houstontx.gov
cyrusoneeadns.houstontx.gov
SPF Record
✓ Strict (-all)
v=spf1 a:tb01194smtp01.cohsmtp.houstontx.gov a:tb01194smtp02.cohsmtp.houstontx.gov a:argosapp04.sirsi.net include:spf.protection.outlook.com include:spf.mtasv.net include:_spf.salesforce.com include:spf.us.odmad.quest-on-demand.com ip4:185.250.239.105 ip4:204.235.229.87 ip4:204.235.229.88 ip4:192.235.102.127 ip4:74.213.147.250 ip4:74.213.147.251 ip4:74.213.147.27 ip4:74.213.147.28 ip4:72.20.134.162 ip4:34.58.215.46 ip4:104.197.65.145 -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;fo=1;rua=mailto:[email protected];ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
s2._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
15 records- @3600INTXTadobe-idp-site-verification=c9948bd0af0e74027fbbde0269d74fc513c816a7187701099913cfba4935081a
- nintex.5c33b60ce99d1c7f9b03d44a
- duo_sso_verification=GAVGNrvpJkvS3RRULl9vCQjj2DwXY1w7ldd2SjI3i4CHV2bgvIDqjXgS1nsz6mI3
- intersight=ea3c9ae4c7d13e9141d3f14998c1bff450ff60fe1849d3d93dc6c826cc9b59e2
- google-site-verification=Qh53cM9QEvXhKzlpxY7DJ-jfU5ZFrVRHWTkyGWGZ1Ig
- iYmfz+HDZErTAaeD9S/JAKmCJS43sOMdoBV6N7cbuMnq8LzewVNCrNa3J66+oRs/0jPhsmqhTGwiHQqyVHNuRg==
- SPFv=spf1 a:tb01194smtp01.cohsmtp.houstontx.gov a:tb01194smtp02.cohsmtp.houstontx.gov a:argosapp04.sirsi.net include:spf.protection.outlook.com include:spf.mtasv.net include:_spf.salesforce.com include:spf.us.odmad.quest-on-demand.com ip4:185.250.239.105 ip4:204.235.229.87 ip4:204.235.229.88 ip4:192.235.102.127 ip4:74.213.147.250 ip4:74.213.147.251 ip4:74.213.147.27 ip4:74.213.147.28 ip4:72.20.134.162 ip4:34.58.215.46 ip4:104.197.65.145 -all
- MS=ms35634480
- cisco-ci-domain-verification=1a048806c1a7b64c1faa662f75fd1b25ad4925b87789aeb0b61be73ed6062bbf
- nintex.5d2fbcd3959db40e52ea2fdd
- canva-site-verification=RdHm2ScxBFiFmvpkHYT6Ug
- docusign=999c2fc1-7907-4283-9bda-2a859b317563
- MTcyMjU3Mzo4NDJhMzcwNzgwMDMxMmQ2MmE4YWMzZjBiM2Q3NzZjODVhNjAxMWZiYzVhYjdmZTY3MzgzNmQ3NTBlNjA3ZDIx
- intersight=4c93fe22aa4c9f8c149d1f701309872448b2882622df5e2e2df5fc07cbf6b5c2
- adobe-idp-site-verification=c9948bd0af0e74027fbbde0269d74fc513c816a7187701099913cfba4935081a
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