Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
letsdev.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 12:07:47 UTC · ↺ Refresh
MX Hostnames
- mail.letsdev.de
MX Priorities
- mail.letsdev.de: 10
A / AAAA Records
- 217.160.0.14 ↩ 217-160-0-14.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::2d7 ↩ 2001-08d8-100f-f000-0000-0000-0000-02d7.elastic-ssl.ui-r.com
Mail Server IPs
- 217.92.62.123 ↩ exchange.letsdev.de
- 213.144.18.12 ↩ customer.telemaxx.net
SOA Record
Raw SOA
ns1079.ui-dns.com hostmaster.1und1.de 2017082251 28800 7200 604800 300
Primary NS (mname)
ns1079.ui-dns.com
Admin Email (rname)
hostmaster@1und1.de
Serial
2017082251
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1079.ui-dns.de
ns1079.ui-dns.org
ns1079.ui-dns.biz
ns1079.ui-dns.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:mail.letsdev.de include:_spf-eu.ionos.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine; fo=1; pct=100; ri=86400; 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
✓ 4 found
selector1._domainkey
selector2._domainkey
default._domainkey
k1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- SPFv=spf1 include:mail.letsdev.de include:_spf-eu.ionos.com include:spf.protection.outlook.com ~all
- f2U6BvSha3w6/mW1zR7Bkd7AUGUijRtvZ/CRxU3Kx2o2Xmf1jyNBXUMGm6RknS2eUukNTepbAmnRTiT7DtiXkQ==
- linkedin-site-verification=f2573f96-6f62-4ffa-9c72-2af3ad249e0e
- jetbrains-domain-verification=3ij7g17ax8girbfmqj52zk7lf
- miJn5VzkmgGMqlJ5l0VmW6HY9obeYgVmsdHM/Sxn3iWvQDLYflbKQXUiIeeUK0OiuIXEyzLymjaxOD8J225pWA==
- openai-domain-verification=dv-Uur0s3ZHETd9NEtlXDwgMROD
- google-site-verification=VLFAGtf0RdYx-v1qf1GvM1zMsrd0d4cUmftn3fklezI
Full email verification for letsdev.de
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