Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fh-potsdam.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 12:45:52 UTC · ↺ Refresh
MX Hostnames
- fhpotsdam-de0e.mail.protection.outlook.com
MX Priorities
- fhpotsdam-de0e.mail.protection.outlook.com: 0
A / AAAA Records
- 193.175.28.52 ↩ www.fh-potsdam.de
- 2001:638:81c::28:52 ↩ www.fh-potsdam.de
Mail Server IPs
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.fh-potsdam.de it-service.fh-potsdam.de 2026035937 28800 7200 604800 172800
Primary NS (mname)
ns.fh-potsdam.de
Admin Email (rname)
it-service@fh-potsdam.de
Serial
2026035937
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
172800s
Nameservers (NS)
dns-1.dfn.de
ns.fh-potsdam.de
dns-3.dfn.de
dns-2.dfn.de
SPF Record
✓ Strict (-all)
v=spf1 mx mx:s1902.mx.srv.dfn.de ip4:193.175.28.0/24 ip6:2001:638:81c:0::/64 include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; adkim=r; aspf=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
9 records- adobe-idp-site-verification=b1ac341cfa94919b02f11cf660fdde2ad5744ec0f3b38d1f1b58584124c04dc6
- HARICA-JgMMGoeM2A4g5qmyf68
- apple-domain-verification=QxM64y4E3pcpNaHW
- SPFv=spf1 mx mx:s1902.mx.srv.dfn.de ip4:193.175.28.0/24 ip6:2001:638:81c:0::/64 include:spf.protection.outlook.com -all
- MS=ms35429193
- ZOOM_verify_yzsF0aDkSu6vRfQCL11jIw
- 6d67014b72cd13f06a4da619a4273da6
- google-site-verification=sUch_8bCuxiCYMShprw7CG1cRLJCq40Ltux0xKBQ-6k
- 2af13c595471c4ade259985bd989977c
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