Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ritterwerk.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 13:39:15 UTC · ↺ Refresh
MX Hostnames
- ritterwerk-de.mail.protection.outlook.com
MX Priorities
- ritterwerk-de.mail.protection.outlook.com: 0
A / AAAA Records
- 109.71.75.32 ↩ app-a-go.c-2680.maxcluster.net
Mail Server IPs
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1053.ui-dns.org hostmaster.1und1.com 2017060179 28800 7200 604800 600
Primary NS (mname)
ns1053.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060179
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1053.ui-dns.org
ns1016.ui-dns.biz
ns1018.ui-dns.de
ns1043.ui-dns.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com a:mail.xperten.net a:mail.xperten.eu a:mx1.mxia.de ip4:109.71.75.32 ip4:217.92.171.134 ip4:87.140.115.222 ip6:2a05:cc00::75:32:10 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=quarantine
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
3 records- google-site-verification=eZd3DnHVdN5xsdEBl2SjfKqTHMic0kjBMI4c2KMiiaE
- MS=EB78DE236E2F7E870C3C16CD465707BE3DAD53B2
- SPFv=spf1 include:spf.protection.outlook.com a:mail.xperten.net a:mail.xperten.eu a:mx1.mxia.de ip4:109.71.75.32 ip4:217.92.171.134 ip4:87.140.115.222 ip6:2a05:cc00::75:32:10 -all
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