Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
arc-com.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 10:57:53 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: 0
A / AAAA Records
- 172.67.160.240 (no PTR)
- 104.21.57.70 (no PTR)
- 2606:4700:3035::ac43:a0f0 (no PTR)
- 2606:4700:3031::6815:3946 (no PTR)
Mail Server IPs
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ 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
SOA Record
Raw SOA
troy.ns.cloudflare.com dns.cloudflare.com 2399507646 10000 2400 604800 1800
Primary NS (mname)
troy.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399507646
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
zoe.ns.cloudflare.com
troy.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +ip4:199.167.131.11 include:spf-a.entirelydigital.com +ip4:216.170.124.126 +include:us._netblocks.mimecast.com -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
default._domainkey
✓ 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- SPFv=spf1 +a +mx +ip4:199.167.131.11 include:spf-a.entirelydigital.com +ip4:216.170.124.126 +include:us._netblocks.mimecast.com -all
- MS=ms22321911
- MS=ms29673159
- MS=ms48852570
- cisco-ci-domain-verification=7ae4ebe2fdbe2a2b9719ebd1a4278113cfd3b557ee4d0998e2ede6abb4848e1e
- google-site-verification=LftZlAox4raxKvFFARZodD4oYRWQwEAVPnjL1x1LK90
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