Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
atb-potsdam.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 14:24:48 UTC · ↺ Refresh
MX Hostnames
- mail.atb-potsdam.de
MX Priorities
- mail.atb-potsdam.de: 10
A / AAAA Records
- 193.174.10.216 ↩ typo.atb-potsdam.de
Mail Server IPs
- 193.174.10.215 ↩ mail.atb-potsdam.de
SOA Record
Raw SOA
zentralserver.atb-potsdam.de administratoren.atb-potsdam.de 2026021728 10800 3600 2419200 900
Primary NS (mname)
zentralserver.atb-potsdam.de
Admin Email (rname)
administratoren@atb-potsdam.de
Serial
2026021728
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
deneb.dfn.de
zentralserver.atb-potsdam.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:141.89.210.5 ip4:193.174.10.215 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=reject; aspf=s; fo=s; pct=10;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
⚠ Policy applies to 10% of failing messages only
DKIM Selectors
✓ 1 found
s1._domainkey
✓ Public key: 216 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
5 records- adobe-idp-site-verification=2e16faea09f88d66e91ca8c60aa282f542232e32e5d3074416a0dee867d01d42
- HARICA-1sUXHS4v09zha43FEcG
- asv=6d2cb7437c9444c5dd6917c568c4127f
- adobe-idp-site-verification=1e76c41625ce68ac1e1597962df844abe69d619076849e208425947c4b934793
- SPFv=spf1 ip4:141.89.210.5 ip4:193.174.10.215 -all
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