usk.de

Valid Email Server
Domain Lookup › usk.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
usk.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-28 07:44:07 UTC · ↺ Refresh

MX Hostnames

  • mx1.agenturserver.de
  • mx2.agenturserver.de
  • mx3.agenturserver.de
  • mx4.agenturserver.de

MX Priorities

  • mx1.agenturserver.de: 10
  • mx4.agenturserver.de: 50
  • mx3.agenturserver.de: 20
  • mx2.agenturserver.de: 10

A / AAAA Records

  • 176.52.243.254 ↩ r28082.agenturserver.it

Mail Server IPs

  • 185.15.192.56 ↩ mx1.agenturserver.de
  • 185.15.192.59 ↩ mx4.agenturserver.de
  • 185.15.192.58 ↩ mx3.agenturserver.de
  • 185.15.192.57 ↩ mx2.agenturserver.de

SOA Record

Raw SOA ns01.agenturserver.de support.mittwald.de 1767882447 28800 7200 604800 3600
Primary NS (mname)
ns01.agenturserver.de
Admin Email (rname)
support@mittwald.de
Serial
1767882447
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns01.agenturserver.de
ns01.agenturserver.it
ns01.agenturserver.co

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx ip4:80.156.28.70 ip4:80.156.28.68 include:agenturserver.de include:spf.brevo.com include:spf.codepiraten.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: quarantine

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

10 records
  • brevo-code:9dde805e8810f0e0a29597cebedc6bb9
  • DMARCv=DMARC1; p=none; rua=mailto:[email protected]
  • k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCmRarDnm8s2nXsyiS5nfC5eWCzW/dVfM7TRKEjVDlBq/QlKe8wdH4SPUgV0SO4Ppzkpm0twv5Pw+qhdnqdATasHOsd+VzDJbOyR4PTK2L3DK2zA/OeXGlfj4EDSJ5jNWO/JJC4mVmIg3HyNckI00i2k62xLXKEBdYeF/jMGe4f6QIDAQAB
  • DKIMv=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDGwOsM1+SbgM6KK6OpvgrfXP7mHe2QnqKLFCsOC+GAXpqIZYZS2Sz5c9kBOuH2oxAD2ilhnFy8xzoNn79R08L9XXO/rpX9mzDhzO+Gc4biJGOBtRk+izPqyonqJD8jpVkNsypfUIOQ4132tsONYPka0++wsWzTN2v/E3gPSxfxjwIDAQAB
  • google-site-verification=mFU3NS8Hu59QOrMxt4gWAGu9jdZTEfI3ik7HsyZjQI4
  • DKIMv=DKIM1;k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z+FApQ6ra2VsXfbJP3HE6wAO0YTVEJt1TmeczhEd2Jiz/fcabIISgXEdSpTYJhb0ct0VJRxcg4c8c7wIDAQAB
  • MS=D7E7C0EF42CB1D868C1033C40C2FB31764F77256
  • MS=ms56495379
  • DKIMv=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC0a1phfSD3cvoxbQSid3f5YWTgNnRwVWDwEztZXAubbOOPj6FRMCSPtZlxQD45BAiSe5sjEw5xiNMTgqR0GMyQuNso02H1mGFqjcXopjyQ2MHiFZhcp1WLZobt5tFNVHLRN4qGXTUcs2rNf7vYVIYoUoQWLGSfe50FmnH4dCVW2wIDAQAB
  • SPFv=spf1 a mx ip4:80.156.28.70 ip4:80.156.28.68 include:agenturserver.de include:spf.brevo.com include:spf.codepiraten.com ~all
Full email verification for usk.de

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits