Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
i-opentech.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 14:16:33 UTC · ↺ Refresh
MX Hostnames
- iopentech-com0c.mail.protection.outlook.com
MX Priorities
- iopentech-com0c.mail.protection.outlook.com: 0
A / AAAA Records
- 104.26.13.92 (no PTR)
- 172.67.74.189 (no PTR)
- 104.26.12.92
- 2606:4700:20::ac43:4abd
- 2606:4700:20::681a:d5c
- 2606:4700:20::681a:c5c
Mail Server IPs
- 52.101.190.1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
- 52.101.192.1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 52.101.190.0 ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
- 52.101.190.3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c942::2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 2a01:111:f403:c944:: ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com
- 2a01:111:f403:c942::3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c942::1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
SOA Record
Raw SOA
brenda.ns.cloudflare.com dns.cloudflare.com 2398859482 10000 2400 604800 1800
Primary NS (mname)
brenda.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398859482
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
woz.ns.cloudflare.com
brenda.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:sendgrid.net include:spf.protection.outlook.com include:_spf.atlassian.net ip4:209.54.116.220 ip4:209.54.116.221 ip4:204.191.219.3 ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 include:sendgrid.net include:spf.protection.outlook.com include:_spf.atlassian.net ip4:209.54.116.220 ip4:209.54.116.221 ip4:204.191.219.3 ~all
- MS=ms56345871
- atlassian-domain-verification=CVjhXFzRBzgFTFBFVJGukLGvGCZ+fIYsim/ZBSfZXRrXpRe/muJQ7yxiuRlC3gGx
Full email verification for i-opentech.com
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