Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
biworldwide.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 14:35:55 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 20
A / AAAA Records
- 23.185.0.3 (no PTR)
- 2620:12a:8001::3 (no PTR)
- 2620:12a:8000::3 (no PTR)
Mail Server IPs
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns1.biworldwide.com hostmaster.biworldwide.com 2026031901 43200 900 1857600 60
Primary NS (mname)
ns1.biworldwide.com
Admin Email (rname)
hostmaster@biworldwide.com
Serial
2026031901
Refresh
43200s
Retry
900s
Expire
1857600s
Minimum TTL
60s
Nameservers (NS)
ns2.biworldwide.com
ns1.biworldwide.com
SPF Record
✓ Strict (-all)
v=spf1 exists:%{i}.spf.biworldwide.com include:us._netblocks.mimecast.com include:_spf.brainier.com include:aspmx.pardot.com include:_spf.spotme.com exists:%{i}._spf.mta.salesforce.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
13 records- MS=ms87327458
- MS=ms45064956
- atlassian-domain-verification=bkr4RXoqiOpeciEYYj7AD2rRraeFzficMMrtJ/TyEvRQ2QRcVYjUsskqiAXaVE/a
- 0ed1fe018a3745ecc1726b49288d77bfdfe44ba89d
- amazonses:y2Ar14ooyXTk9n7D5N7VNyFztEuzvRFc8cG0ovD7GKU=
- SPFv=spf1 exists:%{i}.spf.biworldwide.com include:us._netblocks.mimecast.com include:_spf.brainier.com include:aspmx.pardot.com include:_spf.spotme.com exists:%{i}._spf.mta.salesforce.com -all
- 0ed1fe018ab5621fa372ed4ef595bbc8c31fb879bf
- rm_verify=87dac64b61
- mandrill_verify.euAD9rP8lNQoBW91mnCPlA
- ZOOM_verify_W7Tb-4PdQ0yyKAmjpZ1yUA
- canva-site-verification=TuPaEZca61PNWRGZziVMbw
- pardot513751=8765bbeacb08124f1238a7cc7486acde9a8d6dc4c018d99202d0d4fe1aeb4044
- MS=AE420D2F55AC063743F065D01A11FB37AB156426
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