Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kreston.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 13:57:39 UTC · ↺ Refresh
MX Hostnames
- kreston-com.mail.protection.outlook.com
MX Priorities
- kreston-com.mail.protection.outlook.com: 30
A / AAAA Records
- 104.21.65.251 (no PTR)
- 172.67.196.78 (no PTR)
- 2606:4700:3036::6815:41fb
- 2606:4700:3036::ac43:c44e
Mail Server IPs
- 52.101.73.16 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
SOA Record
Raw SOA
elle.ns.cloudflare.com dns.cloudflare.com 2400031129 10000 2400 604800 1800
Primary NS (mname)
elle.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400031129
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
tim.ns.cloudflare.com
elle.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:emsd1.com include:spf.sendinblue.com include:spf.zenzero.co.uk include:mail.eventsairmail.com include:eventsairmail.com ip4:159.183.181.113 ip4:149.72.116.19 ip4:149.72.117.225 ip4:149.72.119.192 ip4:149.72.119.197 ip4:149.72.119.199 ip4:149.72.119.210 ip4:149.72.147.106 ip4:149.72.148.50 ip4:149.72.155.21 ip4:149.72.160.121 ip4:149.72.166.148 include:sendgrid.net ip4:62.6.59.162 mx -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; sp=none; rua=mailto:[email protected]!10m; ruf=mailto:[email protected]!10m; rf=afrf; pct=100; ri=86400
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]!10m
↳ Subdomain policy: none
DKIM Selectors
✓ 4 found
mail._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- SFMC-mTh9pOjdpnF2u1Em0L-rDSE4nN5wkd3nprvo-VVe
- Sendinblue-code:dbf469209a6d40bc6bae486799707078
- ca3-d60d9529ec2f4db78ba3ca203c7483a5
- klaviyo-site-verification=S3FFKx
- SPFv=spf1 include:spf.protection.outlook.com include:emsd1.com include:spf.sendinblue.com include:spf.zenzero.co.uk include:mail.eventsairmail.com include:eventsairmail.com ip4:159.183.181.113 ip4:149.72.116.19 ip4:149.72.117.225 ip4:149.72.119.192 ip4:149.72.119.197 ip4:149.72.119.199 ip4:149.72.119.210 ip4:149.72.147.106 ip4:149.72.148.50 ip4:149.72.155.21 ip4:149.72.160.121 ip4:149.72.166.148 include:sendgrid.net ip4:62.6.59.162 mx -all
- 201807171307222jvudi3aswujolj2d3bcr2e109vs51by80v1infin5bhlep4ix
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