Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rbbn.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 19:33:50 UTC · ↺ Refresh
MX Hostnames
- usb-smtp-inbound-1.mimecast.com
- usb-smtp-inbound-2.mimecast.com
MX Priorities
- usb-smtp-inbound-1.mimecast.com: 10
- usb-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 23.185.0.4 (no PTR)
- 2620:12a:8001::4 (no PTR)
- 2620:12a:8000::4 (no PTR)
Mail Server IPs
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
- 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
ns1-01.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-01.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-01.azure-dns.info
ns1-01.azure-dns.com
ns2-01.azure-dns.net
ns3-01.azure-dns.org
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=347dnym2._spf._d.mim.ec
📊 DNS lookups: 1/10
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
s1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- 0ed1fe018ae8dd1fab4a8d447a91fe66b15a54892f
- 6l2NKf+y+Sz0iftRw5Q+DGALdaLr90sfyUL4DCodi4kGuJ1wKpkRqfmhMKmd4I2X2eCVoflxelisMW1NxOv7DA==
- globalsign-domain-verification=297F6AC85C9D6E9ED78CA32ACF819017
- globalsign-domain-verification=E138A57AD8F2F83E0FB1C3A5DB16BB09
- SPFv=spf1 redirect=347dnym2._spf._d.mim.ec
- 6sMoDy9chK0d3OySYH8jc0ntTRpJyD/NsAzsAe5CLDq6liUfDinE6mSDtWkTOoxweEcExl8jkYAtS0cnpT8euw==
- pardot27332=7c456487c677c0dfdc4a0a410db6fd833209b1f9c0578b1e12fea4468015f1bc
- fff9d2fa0c8e9e3f5649351157dfdd84
- globalsign-domain-verification=ecdddc881764aadfed3d2dd1b8fdcc31
- docusign=ba5ee30a-e72c-4268-a543-a376e2a29289
Full email verification for rbbn.com
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