Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sarahmia.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 14:52:15 UTC · ↺ Refresh
MX Hostnames
- mx1.zaehlwerk.net
MX Priorities
- mx1.zaehlwerk.net: 10
A / AAAA Records
- 142.132.248.16 ↩ www.zaehlwerk.net
- 2a01:4f8:262:3cab::80 ↩ www.zaehlwerk.net
Mail Server IPs
- 142.132.248.19 ↩ mx1.zaehlwerk.net
- 2a01:4f8:262:3cab::25 ↩ mx1.zaehlwerk.net
SOA Record
Raw SOA
ns01.zaehlwerk.net dns.zaehlwerk.net 2024021501 7200 3600 1209600 86400
Primary NS (mname)
ns01.zaehlwerk.net
Admin Email (rname)
dns@zaehlwerk.net
Serial
2024021501
Refresh
7200s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns01.zaehlwerk.net
ns02.zaehlwerk.net
ns03.zaehlwerk.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:142.132.248.19 ip6:2a01:4f8:262:3cab::25 ip4:185.11.139.220 ip6:2a00:17d8:100:1::8a1 -all
📊 DNS lookups: 0/10
✓ 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
2 records- brevo-code:5c1bc035c7ec5ec8b8f481a9e5c0d264
- SPFv=spf1 ip4:142.132.248.19 ip6:2a01:4f8:262:3cab::25 ip4:185.11.139.220 ip6:2a00:17d8:100:1::8a1 -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
See demo & docs
Deep verification
Full email verification for sarahmia.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits