Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
amarc21.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 02:25:57 UTC · ↺ Refresh
MX Hostnames
- mx1.onoffice.de
- mx2.onoffice.de
- mx3.onoffice.de
MX Priorities
- mx3.onoffice.de: 20
- mx1.onoffice.de: 10
- mx2.onoffice.de: 10
A / AAAA Records
- 49.12.119.158 ↩ ip-49-12-119-158.scrw-net.de
- 2a01:4f8:1c17:80fe::1 ↩ ip6-2a01-04f8-1c17-80fe-0000-0000-0000-0001.scrw-net.de
Mail Server IPs
- 95.130.253.56 ↩ mx3.onoffice.de
- 95.130.253.60 ↩ mx1.onoffice.de
- 95.130.253.71 ↩ mx2.onoffice.de
SOA Record
Raw SOA
nsa2.schlundtech.de domains.onoffice.de 2025012200 43200 7200 1209600 600
Primary NS (mname)
nsa2.schlundtech.de
Admin Email (rname)
domains@onoffice.de
Serial
2025012200
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
nsc2.schlundtech.de
nsa2.schlundtech.de
nsb2.schlundtech.de
nsd2.schlundtech.de
SPF Record
✓ Soft Fail (~all)
v=spf1 include:onoffice.de include:servers.mcsv.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 include:onoffice.de include:servers.mcsv.net ~all
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