Domain Overview
DNS: ✓ 3h ago
Checker: ✓ 3h ago
instem.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-21 06:15:03 UTC · ↺ Refresh
MX Hostnames
- instem-com.mail.protection.outlook.com
MX Priorities
- instem-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.20 (no PTR)
- 141.193.213.21 (no PTR)
Mail Server IPs
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-02.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-02.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns3-02.azure-dns.org
ns4-02.azure-dns.info
ns1-02.azure-dns.com
ns2-02.azure-dns.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:aspmx.pardot.com include:_spf.psm.knowbe4.com include:stspg-customer.com include:21424277.spf04.hubspotemail.net ip4:206.188.15.234 ip4:213.205.148.0/24 ip4:18.168.51.200 ip4:18.168.140.58 ip4:148.59.101.16/28 -all
📊 DNS lookups: 5/10
✓ 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
✓ 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
3 records- SPFv=spf1 include:spf.protection.outlook.com include:aspmx.pardot.com include:_spf.psm.knowbe4.com include:stspg-customer.com include:21424277.spf04.hubspotemail.net ip4:206.188.15.234 ip4:213.205.148.0/24 ip4:18.168.51.200 ip4:18.168.140.58 ip4:148.59.101.16/28 -all
- MS=ms51796962
- pardot864232=c8edeb5d32e9c3cc5a2b3c9872af7d2753661361075bb86d79a870e0867d6f11
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