Domain Overview
DNS: ✓ 30d ago
Checker: ✓ 30d ago
zesar.ch
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-09-23 00:41:13 UTC · ↺ Refresh
MX Hostnames
- mx3.zline.ch
- mx30.zline.ch
- mx140.zline.ch
MX Priorities
- mx30.zline.ch: 10
- mx140.zline.ch: 1
- mx3.zline.ch: 5
A / AAAA Records
- 80.74.153.240 ↩ tajo.host.ch
- 2a00:1128:0:153::240 ↩ tajo.host.ch
Mail Server IPs
- 212.74.141.25 ↩ premix.sysco.ch
- 195.15.223.62 ↩ ov-5250a9.ch3.infomaniak.ch
- 212.74.177.176 ↩ semus.sysco.ch
SOA Record
Raw SOA
ns31.infomaniak.com hostmaster.infomaniak.ch 2026042704 10800 3600 605800 3600
Primary NS (mname)
ns31.infomaniak.com
Admin Email (rname)
hostmaster@infomaniak.ch
Serial
2026042704
Refresh
10800s
Retry
3600s
Expire
605800s
Minimum TTL
3600s
Nameservers (NS)
ns31.infomaniak.com
ns32.infomaniak.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:80.74.153.240/32 include:spf.protection.outlook.com include:spf.zline.ch include:spf.infomaniak.ch include:_spf.sui-inter.net include:mandrillapp.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; adkim=r; aspf=r
~ 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
1 record- SPFv=spf1 ip4:80.74.153.240/32 include:spf.protection.outlook.com include:spf.zline.ch include:spf.infomaniak.ch include:_spf.sui-inter.net include:mandrillapp.com -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 · Customize →
See demo & docs
Deep verification
Full email verification for zesar.ch
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits