Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
spektra-dresden.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 16:20:00 UTC · ↺ Refresh
MX Hostnames
- mx-01-eu-central-1.prod.hydra.sophos.com
- mx-02-eu-central-1.prod.hydra.sophos.com
MX Priorities
- mx-01-eu-central-1.prod.hydra.sophos.com: 1
- mx-02-eu-central-1.prod.hydra.sophos.com: 2
A / AAAA Records
- 85.13.155.97 ↩ dd14304.kasserver.com
Mail Server IPs
- 18.159.237.67 ↩ ec2-18-159-237-67.eu-central-1.compute.amazonaws.com
- 52.57.79.230 ↩ ec2-52-57-79-230.eu-central-1.compute.amazonaws.com
SOA Record
Raw SOA
ns5.kasserver.com hostmaster.kasserver.com 2601281150 28800 7200 1209600 7200
Primary NS (mname)
ns5.kasserver.com
Admin Email (rname)
hostmaster@kasserver.com
Serial
2601281150
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
7200s
Nameservers (NS)
ns5.kasserver.com
ns6.kasserver.com
SPF Record
✓ Strict (-all)
v=spf1 a mx a:mail.spektra-dresden.de include:_spf.prod.hydra.sophos.com include:spf.protection.outlook.com include:143589671.spf08.hubspotemail.net -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict 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
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- sophos-domain-verification=424cca74e3ebe698826321251c506e38c4bba598
- google-site-verification=3FBoEv8rmQ9O1V93WoTofnHZwElInxmKmqVurSt2EfU
- SPFv=spf1 a mx a:mail.spektra-dresden.de include:_spf.prod.hydra.sophos.com include:spf.protection.outlook.com include:143589671.spf08.hubspotemail.net -all
- ZA=rK9+EQjS7cgIxBwSzg/Aj8g4AYpZ6ZkXx6eN3Irpbps=
- sophos-domain-verification=e8cf715a83c2de78f042fcd4aa2ddd41089ca2188beb1ede5404f86d00a9b10f
- MS=ms97095685
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 spektra-dresden.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits