Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
stadtwerke-amberg.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 12:43:53 UTC · ↺ Refresh
MX Hostnames
- mx10.stadtwerke-amberg.de
MX Priorities
- mx10.stadtwerke-amberg.de: 50
A / AAAA Records
- 88.198.28.5 ↩ www136.your-server.de
- 2a01:4f8:d0a:1121::2 ↩ www136.your-server.de
Mail Server IPs
- 88.217.154.244 ↩ mail.stadtwerke-amberg.de
SOA Record
Raw SOA
ns1.core-networks.de hostmaster.core-networks.de 2024092532 28800 7200 604800 1800
Primary NS (mname)
ns1.core-networks.de
Admin Email (rname)
hostmaster@core-networks.de
Serial
2024092532
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns2.core-networks.eu
ns3.core-networks.com
ns1.core-networks.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.mailjet.com a mx ip4:88.217.154.240/28 ip4:213.209.107.180 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; aspf=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
2 records- google-site-verification=LWloLbQQtKwN-XKzrOZkaS_4KD_rcpQeoqedJRqputw
- SPFv=spf1 include:spf.mailjet.com a mx ip4:88.217.154.240/28 ip4:213.209.107.180 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
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