Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
shell.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 16:10:36 UTC · ↺ Refresh
MX Hostnames
- shell-com.q-v1.mx.microsoft
MX Priorities
- shell-com.q-v1.mx.microsoft: 10
A / AAAA Records
- 4.210.156.184 (no PTR)
Mail Server IPs
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.shell.com dns.shell.com 2854358 10800 1080 2419200 600
Primary NS (mname)
dns1.shell.com
Admin Email (rname)
dns@shell.com
Serial
2854358
Refresh
10800s
Retry
1080s
Expire
2419200s
Minimum TTL
600s
Nameservers (NS)
dns1.shell.com
dns3.shell.com
dns2.shell.com
dns4.shell.eu
SPF Record
✓ Strict (-all)
v=spf1 exists:_i.%{i}._h.%{h}._o.%{o}._spf.shell.com include:_spf.shell.com include:_spf1.shell.com include:spf.protection.outlook.com include:_spf.salesforce.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=reject; fo=1; pct=100; ruf=mailto:[email protected]; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
122 records- n8i8ceak50h50tllaatr3edhkf
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- google-site-verification=2RWUzwfEqaFFEu-YXOetJGyDYW_jM1QzfbK63hd_Qec
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- spf2.0/prainclude:biggroup.trclient.com?all
- smartsheet-site-validation=yjjK074dTIEOnWIeLdErssobXkT14tjg
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- globalsign-domain-verification=B669649A5553422868173720E8FD9FC6
- SPFv=spf1 exists:_i.%{i}._h.%{h}._o.%{o}._spf.shell.com include:_spf.shell.com include:_spf1.shell.com include:spf.protection.outlook.com include:_spf.salesforce.com -all
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- MS=ms30427294
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