Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rsbhannover.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 19:34:15 UTC · ↺ Refresh
MX Hostnames
- rsbhannover-de.mail.protection.outlook.com
MX Priorities
- rsbhannover-de.mail.protection.outlook.com: 0
A / AAAA Records
- 88.99.59.121 ↩ your2.active-elements.de
- 2a01:4f8:10a:b90::3 ↩ your2.active-elements.de
Mail Server IPs
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns2.active-elements.de elbeshausen.rsbhannover.de 2026020901 10800 3600 604800 10800
Primary NS (mname)
ns2.active-elements.de
Admin Email (rname)
elbeshausen@rsbhannover.de
Serial
2026020901
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
ns2.active-elements.de
ns3.active-elements.de
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +ip4:87.138.189.40 +a:xenon.active-elements.de +a:krypton.active-elements.de +a:mx.active-elements.de +a:mx2.active-elements.de +a:mx3.active-elements.de include:spf.protection.outlook.com -all
📊 DNS lookups: 9/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; rua=mailto:[email protected]; ruf=mailto:[email protected]; aspf=s; fo=0:1:s:d;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._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
2 records- MS=ms62594569
- SPFv=spf1 +a +mx +ip4:87.138.189.40 +a:xenon.active-elements.de +a:krypton.active-elements.de +a:mx.active-elements.de +a:mx2.active-elements.de +a:mx3.active-elements.de include:spf.protection.outlook.com -all
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