Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
foss.st.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 17:55:53 UTC · ↺ Refresh
MX Hostnames
- foss-st-com.mail.protection.outlook.com
MX Priorities
- foss-st-com.mail.protection.outlook.com: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
SOA Record
Raw SOA
delta.dmz-eu.st.com dnsmaster.st.com 2020103069 3600 600 1209600 3600
Primary NS (mname)
delta.dmz-eu.st.com
Admin Email (rname)
dnsmaster@st.com
Serial
2020103069
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
a9-65.akam.net
a28-66.akam.net
a1-23.akam.net
delta.dmz-us.st.com
a2-66.akam.net
a5-64.akam.net
a8-66.akam.net
delta.dmz-ap.st.com
delta.dmz-eu.st.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:164.129.1.35 ip4:138.198.100.35 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; fo=1; rua=mailto:[email protected]; ruf=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
1 record- SPFv=spf1 include:spf.protection.outlook.com ip4:164.129.1.35 ip4:138.198.100.35 -all
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