Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sioux-city.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 22:54:55 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 135.84.124.41 (no PTR)
Mail Server IPs
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns3.worldnic.com namehost.worldnic.com 125110608 10800 3600 604800 3600
Primary NS (mname)
ns3.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125110608
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns4.worldnic.com
ns3.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.mtasv.net include:_spf.neonemails.com include:amazonses.com ip4:96.63.179.225/32 ip4:192.68.150.0/24 ip4:74.114.64.241 ip4:74.114.66.241 -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
11 records- l03m4g0411nn3e1ae4o6j3jo61
- 8eav7besve6gs3ok5r11n3i0a5
- 5siatkq4e5p9ttosjnoktarc8s
- MS=ms87562057
- google-site-verification=871qGllnQLV4rkJlC4koxnWn2Q-mJV66JUJ5OUbtSr8
- j0pogl387nikh17djonimbnqsg
- vtvlufewUJacxKsGmrcX8rMufL2m1lOXYU3iQu/ydicifi/GvxfAeB+pHyRUgOJ+hFHgeKXVNo2jWsl3HQuiXA==
- apple-domain-verification=4dk1j8HFWq9jVSwe
- k9trbf59t9rl3i854fhlt2jkh6
- SPFv=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.mtasv.net include:_spf.neonemails.com include:amazonses.com ip4:96.63.179.225/32 ip4:192.68.150.0/24 ip4:74.114.64.241 ip4:74.114.66.241 -all
- lvjgu8bki5sipfqe40e1a343s3
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