Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rbb-aluminium.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 13:54:40 UTC · ↺ Refresh
MX Hostnames
- mailout.rbb-aluminium.de
MX Priorities
- mailout.rbb-aluminium.de: 5
A / AAAA Records
- 217.160.0.95 ↩ 217-160-0-95.elastic-ssl.ui-r.com
Mail Server IPs
- 91.26.167.212 ↩ mailout.rbb-aluminium.de
SOA Record
Raw SOA
ns1025.ui-dns.biz hostmaster.schlund.de 2017020150 28800 7200 604800 300
Primary NS (mname)
ns1025.ui-dns.biz
Admin Email (rname)
hostmaster@schlund.de
Serial
2017020150
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1025.ui-dns.de
ns1025.ui-dns.biz
ns1025.ui-dns.com
ns1025.ui-dns.org
SPF Record
✓ Strict (-all)
v=spf1 a mx a:mailout.rbb-aluminium.de ip4:77.244.101.58 ip4:91.26.167.212 include:_spf.perfora.net include:_spf-eu.ionos.com include:_spf.kundenserver.de -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- google-site-verification=TRv8JeUbQtIfLb2to5v0P64TjkfAA3w_Qp5B19EdQ8c
- SPFv=spf1 a mx a:mailout.rbb-aluminium.de ip4:77.244.101.58 ip4:91.26.167.212 include:_spf.perfora.net include:_spf-eu.ionos.com include:_spf.kundenserver.de -all
- v=verifydomain MS=6650322
- ccupt931mbuchmumuaigp2s28r
- brevo-code:df29e0fccc7a36859ba355506028c4da
- brevo-code:46df5fe1a4d18cb59071a334bb0c0df6
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for rbb-aluminium.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits