sisteronline.co.uk

Valid Email Server
Domain Lookup › sisteronline.co.uk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sisteronline.co.uk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-14 02:01:21 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • mail15.citrus-it.net
  • mail98.citrus-it.net
  • mail99.citrus-it.net
  • mail10.citrus-it.net

MX Priorities

  • mail98.citrus-it.net: 98
  • mail99.citrus-it.net: 99
  • mail10.citrus-it.net: 10
  • mail15.citrus-it.net: 10

A / AAAA Records

  • 23.227.38.65 ↩ myshopify.com

Mail Server IPs

  • 89.248.55.126 ↩ fallback.citrus-it.net
  • 89.248.55.123 ↩ mail99.citrus-it.net
  • 89.248.55.113 ↩ mail99.citrus-it.net
  • 89.248.55.121 ↩ mail99.citrus-it.net
  • 89.248.55.115 ↩ mail99.citrus-it.net
  • 89.248.55.101 ↩ mail.citrus-it.net
  • 89.248.55.109 ↩ mail.citrus-it.net

SOA Record

Raw SOA ns0.citrus-it.net hostmaster.citrus-it.net 2026011100 10800 3600 604800 3600
Primary NS (mname)
ns0.citrus-it.net
Admin Email (rname)
hostmaster@citrus-it.net
Serial
2026011100
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns0.citrus-it.net
ns1.citrus-it.net

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:89.248.55.64/26 include:servers.mcsv.net include:shops.shopify.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

DKIM Selectors

✓ 1 found
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

1 record
  • SPFv=spf1 ip4:89.248.55.64/26 include:servers.mcsv.net include:shops.shopify.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 sisteronline.co.uk

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits