Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jakob-ag.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 07:21:29 UTC · ↺ Refresh
MX Hostnames
- jakobag-de01c.mail.protection.outlook.com
MX Priorities
- jakobag-de01c.mail.protection.outlook.com: 20
A / AAAA Records
- 81.169.145.93 ↩ w8d.rzone.de
- 2a01:238:20a:202:1093:: ↩ w8d.rzone.de
Mail Server IPs
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.73.16 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
SOA Record
Raw SOA
shades15.rzone.de hostmaster.strato-rz.de 2023071151 86400 7200 604800 300
Primary NS (mname)
shades15.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2023071151
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks05.rzone.de
shades15.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- google-site-verification=jAah-7cHW8uoyjPccNG7wiFtG_ykPnLpMwbIrL3Ipdg
- MS=ms86852240
- SPFv=spf1 include:spf.protection.outlook.com -all
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