Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
colonialpenn.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 14:01:49 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
- 104.18.2.231 (no PTR)
- 104.18.3.231 (no PTR)
- 2606:4700::6812:3e7 (no PTR)
- 2606:4700::6812:2e7 (no PTR)
Mail Server IPs
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
lakas.ns.cloudflare.com dns.cloudflare.com 2396740220 10000 2400 604800 1800
Primary NS (mname)
lakas.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396740220
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
margaret.ns.cloudflare.com
lakas.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:sparkpostmail.com include:cust-spf.exacttarget.com include:_spf.salesforce.com ip4:20.10.158.46 ip4:208.185.229.0/24 ip4:35.80.141.6 ip4:44.229.121.55 ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=none;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;aspf=r;adkim=r;fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
8 records- MS=ms60243526
- _globalsign-domain-verification=37tyZw5IsJcFomMlu7Z4oX4TWLEMo_5LrZ6D9MJhVi
- dtm-domain-verification=oYTaJf_BPHLksKky7BmsCDMCF5E0HzARDOvSOV0R5yQ
- google-site-verification=B_NrVSvJsnaYnk_7E3cEbmNHSGtT-W0xazqmjf-rILA
- knowbe4-site-verification=85bc823a0600f658144b9387eb19c179
- pmddpCjjQQB7RdBhhT7a6Rms2cA1qBlPX/U3s4tgWecjCa9DRem4Y9oHttd05uUM7S9SeEjECDQrIDHXtDTHGQ==
- DKIMv=DKIM1;k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCERGYddMgsWvNlFhjBo3ZcCIJNUO4lyxI/ngO7j6Q1ziSBpYzBa1mSNCA2W78+g+SBF+NJbqfBQ+n1rrPQCZjm9G7rG6ZvQWjakI2zfI6k4sxOJ+S8SrJhAPO699ejORKsfaQTUfjaW6EVGFaKmuU47Q8XMcRgEGl+VYHUUiit4wIDAQAB
- SPFv=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:sparkpostmail.com include:cust-spf.exacttarget.com include:_spf.salesforce.com ip4:20.10.158.46 ip4:208.185.229.0/24 ip4:35.80.141.6 ip4:44.229.121.55 ~all
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