Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
coit.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 20:34:18 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 23.185.0.3 (no PTR)
- 2620:12a:8000::3 (no PTR)
- 2620:12a:8001::3 (no PTR)
Mail Server IPs
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
lynn.ns.cloudflare.com dns.cloudflare.com 2398997746 10000 2400 604800 1800
Primary NS (mname)
lynn.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398997746
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
lynn.ns.cloudflare.com
tina.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.coit.com ip4:54.215.68.8 ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
7 records- google-site-verification=mmh2np2qqwdB0HOWIpOm7u8e1lW4Lj0dul67-fu4YZc
- SPFv=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.coit.com ip4:54.215.68.8 ~all
- _fdzzyksvlz72zwocpinbdlwb708prsm
- apple-domain-verification=E91Yv-OUqAp-kfd_-WjCwwX-jPIQCQ-3kuDvPkSwqyw
- duo_sso_verification=ZSHFvNfm7dIx00wAkhoYixh9f6gZKWS1nyCc2o1geyXzBsox3WH4F92kNdtRH5k9
- google-site-verification=HEeVzBwSD8TGf_5WSgKAdi7PMzd-SfE4d24KQgSbVUM
- google-site-verification=PsE17ZPLOdTai5UmFaZCfEaALTi1HdZVHoBEVsKcaCA
Full email verification for coit.com
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