Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
big5corp.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 02:32:12 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
a1-137.akam.net hostmaster.big5corp.com 2020101316 3600 600 604800 300
Primary NS (mname)
a1-137.akam.net
Admin Email (rname)
hostmaster@big5corp.com
Serial
2020101316
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
a12-67.akam.net
a1-137.akam.net
a16-65.akam.net
a14-64.akam.net
a11-66.akam.net
a3-66.akam.net
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=530zcoyg._spf._d.mim.ec
📊 DNS lookups: 1/10
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
15 records- o88aigjh6u4q61smida2m0g0no
- 775rv8e643lauam6nnkjsdo1eu
- nhd429og61nvk3vi97fmdsejik
- ciscocidomainverification=46efee9883e0785ecbe88115e2a63ef1b7455e95ae90054533aaabad0e52d5867455e95ae90054533aaabad0e52d586
- rubq6hnj0jv60og4vctpbm96u3
- j158ltllt0og52bc7jlgj6rf9
- n19ott772bo03ukisc10n2uc85
- google-site-verification=5VoBJ0yL_x5gmkEJRW9g9ft3DLE96UOMvA4MD9EaTos
- ra49qa1qf1h6nba1uqa7f54r8u
- i4qkleq77i7em9602pibjr7hbp
- r2kicj70mkdj7u4fre9bnusdfv
- SPFv=spf1 redirect=530zcoyg._spf._d.mim.ec
- s2KdG8u37a/LS/AXusYWM9PK9flQS/hZoBnuy4FR4PXMHz4rVw/6IVhYvX0ZGboldgbFduA6oiYWuqzZv9k4DQ==
- gtik1n8llrp8qmmma29e7j4egrgqegr8c8021qir75bfl11lel53jm2937t2hf6b841o4m0gb76g0d
- MS=ms42977191
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