Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jdav-heidelberg.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 15:51:02 UTC · ↺ Refresh
MX Hostnames
- jdav-heidelberg.de
MX Priorities
- jdav-heidelberg.de: 0
A / AAAA Records
- 38.242.218.21 ↩ jdav-hd.de
Mail Server IPs
- 38.242.218.21 ↩ jdav-hd.de
SOA Record
Raw SOA
ns3.kasserver.com hostmaster.kasserver.com 2603041108 28800 7200 1209600 7200
Primary NS (mname)
ns3.kasserver.com
Admin Email (rname)
hostmaster@kasserver.com
Serial
2603041108
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
7200s
Nameservers (NS)
ns4.kasserver.com
ns3.kasserver.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:38.242.218.21 ~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
✓ 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 a mx ip4:38.242.218.21 ~all
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