Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dallascounty.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-17 22:01:29 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 12
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 76.164.228.43 (no PTR)
Mail Server IPs
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
cbru.br.ns.els-gms.att.net rm-hostmaster.ems.att.com 2007111808 3600 900 604800 7200
Primary NS (mname)
cbru.br.ns.els-gms.att.net
Admin Email (rname)
rm-hostmaster@ems.att.com
Serial
2007111808
Refresh
3600s
Retry
900s
Expire
604800s
Minimum TTL
7200s
Nameservers (NS)
cbru.br.ns.els-gms.att.net
cmtu.mt.ns.els-gms.att.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:209.172.199.5 ip4:76.164.228.5 ip4:209.172.199.23 ip4:209.172.199.22 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:_spf.psm.knowbe4.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
13 records- cisco-ci-domain-verification=9451450e84c77f3489a8406216a6713f5bb7bc5a4e092c59047c2366ddd6f92
- lyn98v383vqkr0xkg1nm3f4dn6lpy4zk
- google-site-verification=RgoRX0GjIO_taEpnQ3fSQ5DWOcJEVDyKfkKPF2kZt24
- adobe-sign-verification=61c55fbd333eebd1c8940f91e977aeea884de3047951b360e5391f6e2ed2ad6e
- dd7pk1ppb2g0qm3kcyvc0mzcv6pfdzjw
- 49l76q8yrcr4jf012bsnwf8d98qyfjs5
- SPFv=spf1 ip4:209.172.199.5 ip4:76.164.228.5 ip4:209.172.199.23 ip4:209.172.199.22 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:_spf.psm.knowbe4.com -all
- atlassian-domain-verification=1GXbaJ9lJAcHzdabB9r2b35IR8MYhCdjWvlGqKdki2Fvjti4aVWbS9eGIPtMlq3a
- onetrust-domain-verification=af32a7d6057144e3a6a62d9a9c86a44f
- 70674
- SroULpV8ND/yQ4r6Mo8CCAFktdIxeemedztSQ0IPr748SSz8Q73YCj9l8Ee+vm+H59FSi2CDlCRoIMXU4r6kvw==
- s8nddtnrw0h4bvj6j3wsjk9vmkytbww9
- 0ed1fe018a6be30f426947430d9e1bfd9d5250ea23
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