Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gbcu.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 18:50:57 UTC · ↺ Refresh
MX Hostnames
- mx03.secure-mailgate.com
- mx04.secure-mailgate.com
MX Priorities
- mx04.secure-mailgate.com: 10
- mx03.secure-mailgate.com: 10
A / AAAA Records
- 81.88.34.7 ↩ host311.alfahosting-server.de
Mail Server IPs
- 46.243.88.175 ↩ node03.secure-mailgate.com
- 46.243.88.177 ↩ node04.secure-mailgate.com
- 46.243.88.174 ↩ node03.secure-mailgate.com
- 46.243.88.176 ↩ node04.secure-mailgate.com
SOA Record
Raw SOA
cns1.alfahosting.info hostmaster\@alfahosting.de 2026022302 28800 7200 604800 10800
Primary NS (mname)
cns1.alfahosting.info
Admin Email (rname)
hostmaster\@alfahosting@de
Serial
2026022302
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
cns1.alfahosting.info
cns2.alfahosting.info
cns3.alfahosting.info
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx include:secure-mailgate.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate 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
3 records- sendinblue-code:3ac6b81235f7eba48b36805830f97500
- brevo-code:29cdf77aed8d9f7e1ac88b9290e5bc66
- SPFv=spf1 a mx include:secure-mailgate.com ~all
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