Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rc.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 23:43:19 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 5
- us-smtp-inbound-2.mimecast.com: 5
A / AAAA Records
- 134.199.177.91 (no PTR)
Mail Server IPs
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns81.worldnic.com namehost.worldnic.com 126033114 10800 3600 604800 3600
Primary NS (mname)
ns81.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126033114
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns81.worldnic.com
ns82.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=3jxgkejl._spf._d.mim.ec
📊 DNS lookups: 1/10
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
✓ 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
10 records- atlassian-domain-verification=SPsXCm38D6YrH09x9DlbqoqQiEaIihuhSaudCyXiGrMINM356xwwe4FB4QkPPcal
- QbMSvGzPZIBmG/rsss3Nwlakw2GP7Jc/vtI2469W4uYlAZXtCadPrPS/fFiQq+6O9pP4cSbpKgCPtLOIxeJpyg==l9mnstzxaz4hniw==
- MS=ms35765172
- google-gws-recovery-domain-verification=67600028
- apple-domain-verification=04p1ABhKqw4ltfR6
- MS=ms91306648
- include:_spf.atlassian.net
- atlassian-sending-domain-verification=ce398cf9-2b73-4895-9fd1-f8f32a1338d9
- docusign=cdb7e966-f4c7-424b-bb6f-9229677777ed
- SPFv=spf1 redirect=3jxgkejl._spf._d.mim.ec
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