Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ronblue.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 14:21:18 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
- 141.193.213.21 (no PTR)
- 141.193.213.20 (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
ns1-32.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-32.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns2-32.azure-dns.net
ns3-32.azure-dns.org
ns4-32.azure-dns.info
ns1-32.azure-dns.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:152.70.150.118 ip4:129.213.11.79 include:spf.protection.outlook.com include:usb._netblocks.mimecast.com include:customers.clickdimensions.com include:_spf.messagegears.net include:mail.zendesk.com include:sendgrid.net -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
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
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
16 records- r71aXxv/rJiE/JFk5UprWJ+QK7nubgrv5TvD3nXeDuMVGE4uAatO+64OXgoNNISemV4pnliL+zx3VMEIxFXRFw==
- _globalsign-domain-verification=S2JQTsK71UZHIJbAnordJaZCy8GufhgZ_s5Syzq0qw
- _globalsign-domain-verification=JcswS-AQ_28e_GW51aY5gOeWWigqHKfdXmR_NQB3rx
- docusign=1de2fec5-9be7-47e5-b30a-c13680544d87
- MS=ms12125470
- _globalsign-domain-verification=U74iEth20yEmFDlkFDNlp5u4qR8aoss5X3-bf_4kQ3
- docusign=4543d3d5-824a-47f8-baba-862fa1b40418
- _globalsign-domain-verification=2-2zWe_Aaod6ROMkeb5IQLhC6q8XqwrLXopXLiOLAV
- docusign=efb168fb-37f1-4967-8ac1-3bebe98a92b1
- m7vOkhGQFUPnaTWOxZ09slqTpzXxcNe75nNycnSeNq6oT/2iVW0mZjpFm/cR8blrZVll7Nzvp8/7yFXQAzGlTQ==
- _globalsign-domain-verification=On6jrwYWOSuUvT2uxKt6-7sKo8hNWtbhPchs4Cb_T1
- docusign=f578ef3b-4951-4149-8943-0c8959bfadf4
- adobe-idp-site-verification=ed5bc18e8d1af0ad6d77d75bf3eff7a9d3c69236302023843a26d8cea424cb91
- MS=ms67442265
- globalsign-domain-verification=b11443d0d8ba3c268448f90a06b4d574
- SPFv=spf1 ip4:152.70.150.118 ip4:129.213.11.79 include:spf.protection.outlook.com include:usb._netblocks.mimecast.com include:customers.clickdimensions.com include:_spf.messagegears.net include:mail.zendesk.com include:sendgrid.net -all
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