Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
houstonplumbingheating.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 23:56:33 UTC · ↺ Refresh
MX Hostnames
- houstonplumbingheating-com.mail.protection.outlook.com
MX Priorities
- houstonplumbingheating-com.mail.protection.outlook.com: 0
A / AAAA Records
- 208.68.184.100 ↩ alphadocker.alink.com
Mail Server IPs
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.alink.com support.alink.com 2009010144 1800 600 1209600 3600
Primary NS (mname)
ns1.alink.com
Admin Email (rname)
support@alink.com
Serial
2009010144
Refresh
1800s
Retry
600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns2.alink.com
ns1.alink.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:74.142.8.162 include:spf.protection.outlook.com include:_spf.elasticemail.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
2 records- MS=ms34899400
- SPFv=spf1 ip4:74.142.8.162 include:spf.protection.outlook.com include:_spf.elasticemail.com -all
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