Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zelch.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 09:47:34 UTC · ↺ Refresh
MX Hostnames
- mail01.rsm-com.de
MX Priorities
- mail01.rsm-com.de: 10
A / AAAA Records
- 116.203.181.127 ↩ web01.rsm-com.de
- 2a01:4f8:c0c:579d::1 ↩ web01.rsm-com.de
Mail Server IPs
- 188.245.66.41 ↩ mail01.rsm-com.de
- 2a01:4f8:1c1b:a58e::1 ↩ mail01.rsm-com.de
SOA Record
Raw SOA
ns1.rsm-com.de hostmaster.rsm-com.de 2024080501 14400 3600 1209600 3600
Primary NS (mname)
ns1.rsm-com.de
Admin Email (rname)
hostmaster@rsm-com.de
Serial
2024080501
Refresh
14400s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns1.rsm-com.de
ns2.rsm-com.de
SPF Record
✓ Strict (-all)
v=spf1 mx a -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 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
1 record- SPFv=spf1 mx a -all
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