Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rbs-netkom.de
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 03:53:45 UTC · ↺ Refresh
MX Hostnames
- d314159.a.ess.de.barracudanetworks.com
- d314159.b.ess.de.barracudanetworks.com
MX Priorities
- d314159.b.ess.de.barracudanetworks.com: 20
- d314159.a.ess.de.barracudanetworks.com: 10
A / AAAA Records
- 83.138.83.19 ↩ mail-02.amper.net
Mail Server IPs
- 18.185.115.250 ↩ mail.ess.de.barracuda.com
- 18.185.115.252 ↩ mail.ess.de.barracuda.com
- 18.185.115.251 ↩ mail.ess.de.barracuda.com
SOA Record
Raw SOA
ns01.amper.net do-not-reply.rbs-netkom.de 2026010814 43200 7200 1209600 86400
Primary NS (mname)
ns01.amper.net
Admin Email (rname)
do-not-reply@rbs-netkom.de
Serial
2026010814
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns01.amper.net
ns04.amper.net
ns03.amper.net
ns02.amper.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:83.138.83.19 a:mail-02.amper.net a:remote.rbs-netkom.de include:spf.ess.de.barracudanetworks.com include:spf.protection.outlook.com include:amper.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; pct=100; adkim=r; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· 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
6 records- facebook-domain-verification=uqepbsiujowu8g06mojass7llkjbve
- seobility=efac2905d515ec842fb0e9118c06546e
- google-site-verification=AW1DcZbahS_t6rP63fgWO4LZ1EdGPklKnZvxA8a9f6U
- 0ed1fe018a8a7a0ac07ab44265854ebe0a284c6e4b
- SPFv=spf1 ip4:83.138.83.19 a:mail-02.amper.net a:remote.rbs-netkom.de include:spf.ess.de.barracudanetworks.com include:spf.protection.outlook.com include:amper.net -all
- apple-domain-verification=nbJOfcpYgQZIkSEU
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