Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
oth-regensburg.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-06 13:19:14 UTC · ↺ Refresh
MX Hostnames
- a2751.mx.srv.dfn.de
- c2751.mx.srv.dfn.de
- b2751.mx.srv.dfn.de
MX Priorities
- b2751.mx.srv.dfn.de: 5
- a2751.mx.srv.dfn.de: 5
- c2751.mx.srv.dfn.de: 5
A / AAAA Records
- 194.95.104.109 ↩ rchst.hs-regensburg.de
Mail Server IPs
- 194.95.235.52 ↩ b2751.mx.srv.dfn.de
- 2001:638:d:c302:acdc:1979:2:ec ↩ b2751.mx.srv.dfn.de
- 194.95.233.52 ↩ a2751.mx.srv.dfn.de
- 2001:638:d:c301:acdc:1979:2:ec ↩ a2751.mx.srv.dfn.de
- 194.95.239.52 ↩ c2751.mx.srv.dfn.de
- 2001:638:d:c303:acdc:1979:2:ec ↩ c2751.mx.srv.dfn.de
SOA Record
Raw SOA
dns.hs-regensburg.de dnsadmin.rz.fh-regensburg.de 2026040200 10000 1800 1209600 3600
Primary NS (mname)
dns.hs-regensburg.de
Admin Email (rname)
dnsadmin@rz.fh-regensburg.de
Serial
2026040200
Refresh
10000s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
dns2.hs-regensburg.de
deneb.dfn.de
dns.hs-regensburg.de
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.hs-regensburg.de include:_spfdfn.hs-regensburg.de include:_spf.kdv-fh-bayern.de include:_spfsop.hs-regensburg.de include:_spfbib.hs-regensburg.de include:spf.protection.outlook.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=none; rf=afrf; pct=100; ri=86400; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
6 records- google-site-verification=FI7hdztZiDT8XQMWis2smNtl-f_Daj71cLA0ScA4OmE
- MS=D4AE7B2B5DE2FA5116A41E5F45618A0E8263A08C
- google-site-verification=yWOqnrn0UQptJw61vojCa10CtjtcC2pfY19rZo6rLbM
- adobe-idp-site-verification=076ab51e79ceddb86136707e3dd2f14056f3e32babcb5de4d1778d33a9491ee8
- SPFv=spf1 include:_spf.hs-regensburg.de include:_spfdfn.hs-regensburg.de include:_spf.kdv-fh-bayern.de include:_spfsop.hs-regensburg.de include:_spfbib.hs-regensburg.de include:spf.protection.outlook.com -all
- MS=ms59645788
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