Domain Overview
DNS: ✓ 3h ago
Checker: ✓ 3h ago
lu.ch
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-21 02:34:24 UTC · ↺ Refresh
MX Hostnames
- mx.lu.ch
MX Priorities
- mx.lu.ch: 10
A / AAAA Records
- 194.40.145.200 (no PTR)
Mail Server IPs
- 194.40.156.100 ↩ mx.lu.ch
SOA Record
Raw SOA
ns1.lu.ch hostmaster.lu.ch 2020439371 21600 3600 1209600 3600
Primary NS (mname)
ns1.lu.ch
Admin Email (rname)
hostmaster@lu.ch
Serial
2020439371
Refresh
21600s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns1.sunrise.ch
ns2.lu.ch
ns1.lu.ch
SPF Record
✓ Strict (-all)
v=spf1 mx include:_spf.lu.ch -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;ruf=mailto:[email protected];fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
13 records- Ikx1E--5PcWs2B8UO8wU
- apple-domain-verification=Qgstp5BkYPbcOeH4
- 27fd506ca583225e1dd65c46c23c957d
- mm6sgv38pn4blyjnkym6ntjt4pbf1zzh
- swisssign-check=hZrFdfeeISl4by-WonvB9Rjk6No
- bxt3b40bxpx0hjp9f19np5sfmhcpfy8v
- docker-verification=2e60a12d-ace2-4ad9-890a-37192c0ab2b7
- deepbox-verification=7i6Ax9fj7IFoFnJ37hKH8yVn
- citrix.mobile.ads.otp=r5jafx333avbb29n6v8q
- MS=E5FE3F01ED8F616417FB324929D348A60EBF64B6
- SPFv=spf1 mx include:_spf.lu.ch -all
- google-site-verification=9FEMPR_7cfJUE3pIqD2J4Jfk8XuzazwmYFrS5b7QKKM
- 9ww3ls84252yh63v1jgqkq5ksxbnspts
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