Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nucleusholdings.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 01:59:52 UTC · ↺ Refresh
MX Hostnames
- eu-smtp-inbound-1.mimecast.com
- eu-smtp-inbound-2.mimecast.com
MX Priorities
- eu-smtp-inbound-2.mimecast.com: 10
- eu-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 104.21.10.196 (no PTR)
- 172.67.190.211 (no PTR)
- 2606:4700:3034::6815:ac4 (no PTR)
- 2606:4700:3033::ac43:bed3 (no PTR)
Mail Server IPs
- 195.130.217.211 ↩ eu-smtp-inbound-2.mimecast.com
- 91.220.42.201 ↩ eu-smtp-inbound-2.mimecast.com
- 195.130.217.201 ↩ eu-smtp-inbound-2.mimecast.com
- 91.220.42.241 ↩ eu-smtp-inbound-2.mimecast.com
- 195.130.217.241 ↩ eu-smtp-inbound-1.mimecast.com
- 91.220.42.211 ↩ eu-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
edna.ns.cloudflare.com dns.cloudflare.com 2398825180 10000 2400 604800 1800
Primary NS (mname)
edna.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398825180
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
quentin.ns.cloudflare.com
edna.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:eu._netblocks.mimecast.com include:spf.emailsignatures365.com include:spf.power365-eu.binarytree.com a:etsmail.envisionpharma.com a:etsatlmail.envisionpharma.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
6 records- onetrust-domain-verification=a018943f436a4125ac369aa1093daed7
- smartsheet-site-validation=5mz0lBFuKc2ATz98r_TgpaH-b_45YuaU
- SPFv=spf1 include:eu._netblocks.mimecast.com include:spf.emailsignatures365.com include:spf.power365-eu.binarytree.com a:etsmail.envisionpharma.com a:etsatlmail.envisionpharma.com include:spf.protection.outlook.com ~all
- MS=ms78874872
- box-domain-verification=11343661caae99f8622d8a1f2212f8550f0cd37e8e4f450ef4249d78e9982637
- knowbe4-site-verification=51ff0bf42146d40a256c82675dc58ff8
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