Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
a1heating.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 20:40:51 UTC · ↺ Refresh
MX Hostnames
- a1heating-com.mail.protection.outlook.com
MX Priorities
- a1heating-com.mail.protection.outlook.com: 10
A / AAAA Records
- 104.21.60.158 (no PTR)
- 172.67.198.4 (no PTR)
- 2606:4700:3035::ac43:c604
- 2606:4700:3032::6815:3c9e
Mail Server IPs
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
SOA Record
Raw SOA
ines.ns.cloudflare.com dns.cloudflare.com 2399636596 10000 2400 604800 1800
Primary NS (mname)
ines.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399636596
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
rudy.ns.cloudflare.com
ines.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:amazonses.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
6 records- wpe-verification=a1heatingcooli
- 77qp472r8rikh8jrcrdolda4mo
- MS=257C1400B4CC9D42AF1B677FE7561D8EC54CB31B
- ca3-90b756f2a34c494abd763f374e7f9c85
- google-site-verification=nB-1sAqaajQuH1GYBS8_ZMvgGiuaUqOGPx9V0zGzfls
- SPFv=spf1 include:spf.protection.outlook.com include:amazonses.com ~all
Full email verification for a1heating.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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