Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sibl-bd.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 04:38:48 UTC · ↺ Refresh
MX Hostnames
- sg01.sibl-bd.com
- esg.sibl-bd.com
- siblbd-com01b.mail.protection.outlook.com
MX Priorities
- sg01.sibl-bd.com: 30
- esg.sibl-bd.com: 5
- siblbd-com01b.mail.protection.outlook.com: 0
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 202.84.34.237 ↩ sg01.sibl-bd.com
- 103.137.196.102 ↩ esg.sibl-bd.com
- 52.101.124.117 ↩ mail-tydpr03cu00105.inbound.protection.outlook.com
- 52.101.157.80 ↩ mail-os8pr02cu00100.inbound.protection.outlook.com
- 52.101.137.0 ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
- 2a01:111:f403:cc09:: ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
- 2a01:111:f403:cc1f::4 ↩ mail-os8pr02cu00104.inbound.protection.outlook.com
- 2a01:111:f403:cc1a::8 ↩ mail-tydpr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.bol-online.com hostmaster.bol-online.com 2007080655 36000 900 604800 1800
Primary NS (mname)
ns1.bol-online.com
Admin Email (rname)
hostmaster@bol-online.com
Serial
2007080655
Refresh
36000s
Retry
900s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns2.bol-online.net
ns2.bol-online.com
ns1.bol-online.com
ns1.bol-online.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:103.137.196.102 ip4:202.84.34.227 ip4:202.84.34.236 ip4:202.84.34.237 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=50; ri=86400;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 50% of failing messages only
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
5 records- SPFv=spf1 ip4:103.137.196.102 ip4:202.84.34.227 ip4:202.84.34.236 ip4:202.84.34.237 include:spf.protection.outlook.com -all
- 8k9b0aul13h2mncpijunnrmta6
- do2lkao54lb2q8n7bivt7m4adm
- g643i92p5uipk3e7nt8oc9jgo1
- MS=ms70493881
Full email verification for sibl-bd.com
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