Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
smbss.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-06 13:04:03 UTC · ↺ Refresh
MX Hostnames
- smbss-co-uk.mail.protection.outlook.com
MX Priorities
- smbss-co-uk.mail.protection.outlook.com: 0
A / AAAA Records
- 217.160.133.145 ↩ s24655815.onlinehome-server.info
- 2001:8d8:81e:c000::9:ccc9 ↩ s24655815.onlinehome-server.info
Mail Server IPs
- 52.101.89.2 ↩ mail-lo3p265cu00302.inbound.protection.outlook.com
- 52.101.89.1 ↩ mail-lo0p265cu00201.inbound.protection.outlook.com
- 52.101.99.0 ↩ mail-cwxp265cu00600.inbound.protection.outlook.com
- 52.101.89.0 ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
- 2a01:111:f403:ca0b::2 ↩ mail-lo0p265cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca1a:: ↩ mail-cwxp265cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca0b::1 ↩ mail-lo3p265cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca0b:: ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
SOA Record
Raw SOA
ns2.smbss.co.uk colin.swbss.co.uk 2026030401 10800 3600 1209600 10800
Primary NS (mname)
ns2.smbss.co.uk
Admin Email (rname)
colin@swbss.co.uk
Serial
2026030401
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
10800s
Nameservers (NS)
ns1.smbss.co.uk
ns2.smbss.co.uk
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- v=verifydomain MS=4403101
- SPFv=spf1 include:spf.protection.outlook.com -all
- stripe-verification=16396a2d86d0b28255a7020972b29c200086773b04bf2eece00add37121e1dcc
- google-site-verification=IaRpm2amaW1ThUgyTTd6OKnJMPdXb_3hNLWjqwfApzA
- d365mktkey=uW5hlrCgngAmTqMMAhZJRbkwNLVJdXk8DX9R8gxhK6Qx
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
See demo & docs
Deep verification
Full email verification for smbss.co.uk
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits