Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
arcturusrx.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 20:33:03 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
- 172.67.193.121 (no PTR)
- 104.21.73.245 (no PTR)
- 2606:4700:3031::6815:49f5 (no PTR)
- 2606:4700:3035::ac43:c179 (no PTR)
Mail Server IPs
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ 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
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
hal.ns.cloudflare.com dns.cloudflare.com 2398215755 10000 2400 604800 1800
Primary NS (mname)
hal.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398215755
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
kimora.ns.cloudflare.com
hal.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx include:us._netblocks.mimecast.com include:mailgun.org include:everbridge.net include:spf.protection.outlook.com ip4:23.21.109.197 ip4:23.21.109.212 ip4:34.199.159.209 ip4:34.197.134.60 ip4:147.160.167.14 ip4:147.160.167.15 ip4:52.49.235.189 ip4:52.49.201.246 ip4:34.251.106.174 -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
18 records- cisco-ci-domain-verification=4f5747836fb0deb4464043927fd117e5770815e800d322a566405677fc62c32d
- MS=ms71797560
- 895srckecjghv6gk6ir9l7lmc2
- amazonses:FfMUQLH8vVjcJoqLf4B5SfozQ/e913m8o17TSVis19c=
- t07in8ggnttp26tplimfav6a3g
- atlassian-domain-verification=ZlaX0Fip/G0La7oQDz9jKLSZIIIwEA76+mSILCR5XWvm/Dwt1NRr6gCBtmnIpxyE
- google-site-verification=dnatYdMWHy0AUasiP5RqYzjSOBEnRFUK1ZIywiFlVJ4
- docusign=40e06b8d-34b2-4780-ad6f-5b0ad6b3d56b
- ppe-9176c4492b2742787892
- google-site-verification=RnHZfpyhaIDuGU9q4nhbQaOKmsbUCbxp_9Ajn-02_uw
- nintex.645981e0f35bccc64a9a6d5a
- ei1te4pgov86uao98fnh9tuq05
- nintex.66e114755ab1d011f03e58ae
- 95lsg7siubms9btt38rqq1b8l9
- ZOOM_verify_eLI8kbgrS8SWzUYzbllZhA
- SPFv=spf1 mx include:us._netblocks.mimecast.com include:mailgun.org include:everbridge.net include:spf.protection.outlook.com ip4:23.21.109.197 ip4:23.21.109.212 ip4:34.199.159.209 ip4:34.197.134.60 ip4:147.160.167.14 ip4:147.160.167.15 ip4:52.49.235.189 ip4:52.49.201.246 ip4:34.251.106.174 -all
- 51e5fu2s5211fjnl3phnf5l226
- GI83LV8A49RBA938F4RTO06F5RA0RGFMW337S2LH
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