Domain Overview
DNS: ✓ 3d ago
Checker: ✓ 3d ago
refworks-cos.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-18 10:02:10 UTC · ↺ Refresh
MX Hostnames
- refworkscos-com02b.mail.protection.outlook.com
MX Priorities
- refworkscos-com02b.mail.protection.outlook.com: 10
A / AAAA Records
- 52.44.42.61 ↩ ec2-52-44-42-61.compute-1.amazonaws.com
Mail Server IPs
- 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com
- 2a01:111:f403:f902::2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.markmonitor.com hostmaster.markmonitor.com 2025122301 86400 3600 2592000 172800
Primary NS (mname)
ns1.markmonitor.com
Admin Email (rname)
hostmaster@markmonitor.com
Serial
2025122301
Refresh
86400s
Retry
3600s
Expire
2592000s
Minimum TTL
172800s
Nameservers (NS)
ns5.markmonitor.com
ns6.markmonitor.com
ns7.markmonitor.com
ns1.markmonitor.com
ns2.markmonitor.com
ns3.markmonitor.com
ns4.markmonitor.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; aspf=s; adkim=s;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected],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
4 records- SPFv=spf1 include:spf.protection.outlook.com -all
- cW1EE6zQzL7VgHF108TDQj7xQISACkEhP+4b15HAnNXwZTK3BYkdVxCxFldnEPgezUqqFR5x7si6Ri2GdLdNUw==
- MS=ms13720117
- MS=ms69749618
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