Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
itw.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 11:11:18 UTC · ↺ Refresh
MX Hostnames
- itw-com.mail.protection.outlook.com
MX Priorities
- itw-com.mail.protection.outlook.com: 0
A / AAAA Records
- 74.214.27.226 (no PTR)
Mail Server IPs
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c946::3 ↩ mail-ch0pr04cu00603.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.markmonitor.com hostmaster.markmonitor.com 2026032003 86400 3600 2592000 172800
Primary NS (mname)
ns1.markmonitor.com
Admin Email (rname)
hostmaster@markmonitor.com
Serial
2026032003
Refresh
86400s
Retry
3600s
Expire
2592000s
Minimum TTL
172800s
Nameservers (NS)
ns7.markmonitor.com
ns1.markmonitor.com
ns2.markmonitor.com
ns3.markmonitor.com
ns4.markmonitor.com
ns5.markmonitor.com
ns6.markmonitor.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:172.214.67.207 ip4:209.250.157.197 ip4:62.144.142.171 ip4:192.40.185.125 ip4:125.7.25.190 ip4:216.230.124.68 ip4:62.133.14.138 ip4:128.177.158.50 ip4:128.177.158.51 ip4:204.93.133.100 ip4:50.3.202.40 ip4:199.88.243.101 ip4:199.88.243.161 ip4:199.88.243.6 ip4:194.250.205.61 include:_spf.smtp.com include:spf.protection.outlook.com include:spfext.zapproved.com include:26110593.spf02.hubspotemail.net include:_spf.salesforce.com include:_spf.psm.knowbe4.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 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
3 records- anthropic-domain-verification-ca7s9w=E3jzwq4DqjLeDmR49f4A1MMbl
- SPFv=spf1 ip4:172.214.67.207 ip4:209.250.157.197 ip4:62.144.142.171 ip4:192.40.185.125 ip4:125.7.25.190 ip4:216.230.124.68 ip4:62.133.14.138 ip4:128.177.158.50 ip4:128.177.158.51 ip4:204.93.133.100 ip4:50.3.202.40 ip4:199.88.243.101 ip4:199.88.243.161 ip4:199.88.243.6 ip4:194.250.205.61 include:_spf.smtp.com include:spf.protection.outlook.com include:spfext.zapproved.com include:26110593.spf02.hubspotemail.net include:_spf.salesforce.com include:_spf.psm.knowbe4.com -all
- u558jm4o9mblch4flm0eivpndr
Full email verification for itw.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits