Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
robertsonryan.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 01:44:27 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 192.124.249.159 ↩ cloudproxy10159.sucuri.net
Mail Server IPs
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns3.level3.net dnsteam.level3.com 2026021900 86400 3600 604800 3600
Primary NS (mname)
ns3.level3.net
Admin Email (rname)
dnsteam@level3.com
Serial
2026021900
Refresh
86400s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns4.level3.net
ns3.level3.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:mailgun.org include:spf-us.emailsignatures365.com include:sendgrid.net include:us._netblocks.mimecast.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate 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
6 records- ub4452qafmen78657citkagqof
- ca3-33e75de1f7684b9d97e8d362708767bc
- geh7u4rsaors0o3gj40dhh0aed
- SPFv=spf1 include:mailgun.org include:spf-us.emailsignatures365.com include:sendgrid.net include:us._netblocks.mimecast.com include:spf.protection.outlook.com ~all
- MS=39705E0DE7867F6C2651914404494395B49DDE2B
- 9b3vp66dqc8hsq8t79si454a02
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