Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
guthmannconstruction.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 07:00:24 UTC · ↺ Refresh
MX Hostnames
- guthmannconstruction-com.mail.protection.outlook.com
MX Priorities
- guthmannconstruction-com.mail.protection.outlook.com: 1
A / AAAA Records
- 104.21.62.91 (no PTR)
- 172.67.222.113 (no PTR)
- 2606:4700:3030::ac43:de71
- 2606:4700:3034::6815:3e5b
Mail Server IPs
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
eleanor.ns.cloudflare.com dns.cloudflare.com 2396335268 10000 2400 604800 1800
Primary NS (mname)
eleanor.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396335268
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
lewis.ns.cloudflare.com
eleanor.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:67.225.240.141 ip4:209.59.240.1 ip4:98.101.140.14 include:spf.protection.outlook.com include:host.11massmedia.com Include:spfa.cpmails.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=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
default._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
3 records- apple-domain-verification=3YWV2O7W0Y3ty4WO
- brevo-code:42dd5169e244e4da4fefdbff580af431
- SPFv=spf1 ip4:67.225.240.141 ip4:209.59.240.1 ip4:98.101.140.14 include:spf.protection.outlook.com include:host.11massmedia.com Include:spfa.cpmails.com -all
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