spf.ch

Valid Email Server
Domain Lookup › spf.ch
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
spf.ch
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-09-10 22:31:33 UTC · ↺ Refresh

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MX Hostnames

  • sismtp01.ost.ch

MX Priorities

  • sismtp01.ost.ch: 10

A / AAAA Records

  • 146.136.212.15 ↩ siproxy11.ost.ch

Mail Server IPs

  • 146.136.212.25 ↩ sismtp01.ost.ch
  • 2001:620:1c0:d212:0:2ff:fe12:25 ↩ sismtp01.ost.ch

SOA Record

Raw SOA dns01.ost.ch hostmaster.ost.ch 2015061070 900 600 86400 3600
Primary NS (mname)
dns01.ost.ch
Admin Email (rname)
hostmaster@ost.ch
Serial
2015061070
Refresh
900s
Retry
600s
Expire
86400s
Minimum TTL
3600s

Nameservers (NS)

dns01.ost.ch
dns02.ost.ch

SPF Record

✓ Strict (-all)
v=spf1 mx ip6:2001:620:130:a036::31 ip6:2001:620:130:a036::32 ip4:152.96.36.31 ip4:152.96.36.32 ip4:152.96.21.228 ip4:152.96.21.229 ip4:152.96.36.18 ip4:152.96.36.19 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

4 records
  • MS=24AD6E8ADD410A19FB9AB2C2AE6F18A9E66EAA05
  • MS=ms71727273
  • adobe-idp-site-verification=f23a17f09b83e49324f1646a3cd891aeb2dbf972c3753c3034ffe509462317d0
  • SPFv=spf1 mx ip6:2001:620:130:a036::31 ip6:2001:620:130:a036::32 ip4:152.96.36.31 ip4:152.96.36.32 ip4:152.96.21.228 ip4:152.96.21.229 ip4:152.96.36.18 ip4:152.96.36.19 -all
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