Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rbsint.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 05:39:42 UTC · ↺ Refresh
MX Hostnames
- mail16.rbs.com
- mail02.rbs.com
- mail03.rbs.com
- mail01.rbs.com
- mail15.rbs.com
- mail04.rbs.com
- mail13.rbs.com
- mail14.rbs.com
MX Priorities
- mail04.rbs.com: 10
- mail13.rbs.com: 20
- mail14.rbs.com: 20
- mail15.rbs.com: 20
- mail16.rbs.com: 20
- mail01.rbs.com: 10
- mail02.rbs.com: 10
- mail03.rbs.com: 10
A / AAAA Records
- 13.107.213.40 (no PTR)
- 13.107.246.40 (no PTR)
- 2620:1ec:bdf::40 (no PTR)
- 2620:1ec:46::40 (no PTR)
Mail Server IPs
- 155.136.80.114 ↩ mail04.rbs.com
- 155.136.80.101 ↩ mail13.rbs.com
- 155.136.80.104 ↩ mail14.rbs.com
- 155.136.80.107 ↩ mail15.rbs.com
- 155.136.80.110 ↩ mail16.rbs.com
SOA Record
Raw SOA
udns1.cscdns.net premiumdns.support.neustar 2019111311 3600 600 604800 21600
Primary NS (mname)
udns1.cscdns.net
Admin Email (rname)
premiumdns@support.neustar
Serial
2019111311
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
21600s
Nameservers (NS)
udns1.cscdns.net
udns2.cscdns.uk
SPF Record
✓ Strict (-all)
v=spf1 ip4:193.163.122.6 ip4:193.163.122.7 ip4:155.136.80.0/24 ip4:155.136.18.0/24 ip4:146.121.21.36 ip4:146.121.23.54 ip4:193.8.50.213 ip4:213.167.82.15 ip4:213.167.82.16 ip4:213.167.72.15 include:spf.messagelabs.com include:spf1.rbs.co.uk include:spf2.rbs.co.uk -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
12 records- adobe-idp-site-verification=641792395842e9c7dfd8d65c821ed7a9e09eb29ce1e518d34ca193bdf66fa4ec
- atlassian-domain-verification=flnamO4dwq3z3g3lqA/2XdN9LE4I1BgfZstm/2YLjis1uhLVSkkDPyxeC197djVo
- SPFv=spf1 ip4:193.163.122.6 ip4:193.163.122.7 ip4:155.136.80.0/24 ip4:155.136.18.0/24 ip4:146.121.21.36 ip4:146.121.23.54 ip4:193.8.50.213 ip4:213.167.82.15 ip4:213.167.82.16 ip4:213.167.72.15 include:spf.messagelabs.com include:spf1.rbs.co.uk include:spf2.rbs.co.uk -all
- MS=ms53219575
- MS=ms60357192
- 6d1785ae-a523-4bc9-ac1d-c506066721c7
- e423d04a-a74f-4d1a-bb75-4987837f3c85
- adobe-sign-verification=a8c27034c1cd39851b67d5d68276dcd6
- rovag_verification_token=A2179EFF516348B7BB695EFB4D2857BB
- dtm-domain-verification=itpK059s35YW-6BkTQ2lLCd4_InDWuFU1fT6nJwnJng
- hcp-domain-verification=10cebe53ac6a032497cf67ca6e857fe9902b9e1844bbab189aded51432075cf2
- adobe-idp-site-verification=28bcf22ffb9bb7b79be167933760bbaedf97bb8f1bc982bd92bc9d0c4ec75135
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 rbsint.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits