Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
simco.us
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 11:57:24 UTC · ↺ Refresh
MX Hostnames
- simco-us.mail.protection.outlook.com
MX Priorities
- simco-us.mail.protection.outlook.com: 0
A / AAAA Records
- 35.215.115.136 ↩ 136.115.215.35.bc.googleusercontent.com
Mail Server IPs
- 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.siteground.net dnsadmin.us126.siteground.us 2020030544 86400 7200 3600000 86400
Primary NS (mname)
ns1.siteground.net
Admin Email (rname)
dnsadmin@us126.siteground.us
Serial
2020030544
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns1.siteground.net
ns2.siteground.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:198.37.157.196 ip4:167.89.97.133 ip4:161.38.192.210 include:simco.us.spf.auto.dnssmarthost.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 6 found
selector1._domainkey
selector2._domainkey
default._domainkey
k1._domainkey
s1._domainkey
s2._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
1 record- SPFv=spf1 include:spf.protection.outlook.com ip4:198.37.157.196 ip4:167.89.97.133 ip4:161.38.192.210 include:simco.us.spf.auto.dnssmarthost.net -all
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