syss.de

Valid Email Server

Domain Overview

DNS: ✓ 7h ago Checker: ✓ 7h ago
syss.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-07-02 11:19:11 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • mail01.syss.de

MX Priorities

  • mail01.syss.de: 10

A / AAAA Records

  • 148.251.112.85 ↩ k16h58.meinserver.io

Mail Server IPs

  • 185.142.186.14 ↩ mail01.syss.de

SOA Record

Raw SOA ns1.syss.de hostmaster.syss.de 2026062760 10800 3600 1209600 600
Primary NS (mname)
ns1.syss.de
Admin Email (rname)
hostmaster@syss.de
Serial
2026062760
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
600s

Nameservers (NS)

ns1.syss.de
ns2.syss.de

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:185.142.186.20 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;sp=quarantine;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];adkim=r;aspf=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

5 records
  • _l3iebjuv8ykbvu578wypuhxqet6onrc
  • _rhlrvb85hl1kn3n1q9dr6oqs2tb1gys
  • _lhzozucevh4w3azamukjlk4732ck8g7
  • brevo-code:87985554e9a1faf523a209d4db52e531
  • SPFv=spf1 mx ip4:185.142.186.20 -all
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 · Customize →
See demo & docs
Deep verification
Full email verification for syss.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits