Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
johnsonthermal.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 18:31:13 UTC · ↺ Refresh
MX Hostnames
- johnsonthermal.com.2.0001.arsmtp.com
- johnsonthermal.com.1.0001.arsmtp.com
- johnsonthermal-com.mail.protection.outlook.com
MX Priorities
- johnsonthermal-com.mail.protection.outlook.com: 0
- johnsonthermal.com.1.0001.arsmtp.com: 5
- johnsonthermal.com.2.0001.arsmtp.com: 10
A / AAAA Records
- 173.236.253.133 ↩ apache2-linus.iad1-shared-b8-47.dreamhost.com
Mail Server IPs
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
- 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
SOA Record
Raw SOA
dns103.register.com root\@register.com 124122201 10800 3600 604800 3600
Primary NS (mname)
dns103.register.com
Admin Email (rname)
root\@register@com
Serial
124122201
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns103.register.com
dns104.register.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:173.236.253.133 ip4:66.232.90.198 include:spf.protection.outlook.com include:spf.myconnectwise.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
2 records- SPFv=spf1 ip4:173.236.253.133 ip4:66.232.90.198 include:spf.protection.outlook.com include:spf.myconnectwise.net -all
- E7B26EE2B4
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