Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sierrahr.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 02:45:12 UTC · ↺ Refresh
MX Hostnames
- sierrahr-com.mail.protection.outlook.com
MX Priorities
- sierrahr-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.10 (no PTR)
- 141.193.213.11 (no PTR)
Mail Server IPs
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c946::7 ↩ mail-ch5pr02cu00307.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1640.awsdns-13.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1640.awsdns-13.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-311.awsdns-38.com
ns-723.awsdns-26.net
ns-1161.awsdns-17.org
ns-1640.awsdns-13.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ip4:173.167.241.105 include:servers.mcsv.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
dkim._domainkey
k1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCkLqlAZOnKKIHvLE7rjvS1Pzlh75uMPK4QaeCRahGhcsFSwudMG+P3SPVLc1+1m2EES7ijnzGrNLmNAe6cytWjY2E8+FqUrDNQCK1xJ0dJCpWeUfNERwIDkaoRr3gQgLaG3+HOdltZvx1VLaJD7oX2486PexQSjX9wOfdFw1fFwwIDAQAB
- SPFv=spf1 include:spf.protection.outlook.com ip4:173.167.241.105 include:servers.mcsv.net ~all
- MS=ms48930236
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