Domain Overview
DNS: ✓ 22h ago
Checker: ✓ 22h ago
biofeed.pl
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 06:51:16 UTC · ↺ Refresh
MX Hostnames
- mail.biofeed.pl
MX Priorities
- mail.biofeed.pl: 10
A / AAAA Records
- 216.150.1.1 (no PTR)
Mail Server IPs
- 188.68.237.75 ↩ mail.genlog.pl
SOA Record
Raw SOA
ns1.biofeed.pl hostmaster.biofeed.pl 2026042203 3600 3600 1209600 86400
Primary NS (mname)
ns1.biofeed.pl
Admin Email (rname)
hostmaster@biofeed.pl
Serial
2026042203
Refresh
3600s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.biofeed.pl
ns2.biofeed.pl
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:188.68.237.75 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; ruf=mailto:[email protected]; sp=none; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- google-site-verification=rn6UgGDrwuaZfnd7_9iikiCaHilOEwER2eioUt4fzHM
- anthropic-domain-verification-2crsdr=nGEqXwQPI53O7yIPEfPaRH882
- SPFv=spf1 a mx ip4:188.68.237.75 ~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 biofeed.pl
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits