Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jernbro.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 02:31:35 UTC · ↺ Refresh
MX Hostnames
- jernbro-com.mail.protection.outlook.com
MX Priorities
- jernbro-com.mail.protection.outlook.com: 0
A / AAAA Records
- 162.159.134.42 (no PTR)
Mail Server IPs
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
SOA Record
Raw SOA
dns9.telia.com backbone.telia.net 1774483200 21600 7200 604800 3600
Primary NS (mname)
dns9.telia.com
Admin Email (rname)
backbone@telia.net
Serial
1774483200
Refresh
21600s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns10.telia.com
dns11.se.telia.net
dns12.se.telia.net
dns9.telia.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:aditrocloud.com include:_spf.nanolearning.com include:servers.mcsv.net ip4:217.115.65.9/29 ip4:185.84.28.240/28 ip4:52.232.27.151 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=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
5 records- apple-domain-verification=jbDxjQFUhWmiNIDs
- google-site-verification=v44BaVOOXm5J1-ct8RdeoZZVsEUWiUa3CNEdW1PGdzM
- v=verifydomain MS=ms86478037
- autodesk-domain-verification=E24_nvqSfdsd_meQJQYG
- SPFv=spf1 include:spf.protection.outlook.com include:aditrocloud.com include:_spf.nanolearning.com include:servers.mcsv.net ip4:217.115.65.9/29 ip4:185.84.28.240/28 ip4:52.232.27.151 -all
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