Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
a1environmental.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 00:03:11 UTC · ↺ Refresh
MX Hostnames
- a1environmental-co-uk.mail.protection.outlook.com
MX Priorities
- a1environmental-co-uk.mail.protection.outlook.com: 5
A / AAAA Records
- 35.214.26.223 ↩ 223.26.214.35.bc.googleusercontent.com
Mail Server IPs
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.heartinternet.uk hostmaster.mainnameserver.com 2024091070 10800 600 2419200 3600
Primary NS (mname)
ns.heartinternet.uk
Admin Email (rname)
hostmaster@mainnameserver.com
Serial
2024091070
Refresh
10800s
Retry
600s
Expire
2419200s
Minimum TTL
3600s
Nameservers (NS)
ns2.heartinternet.uk
ns.heartinternet.uk
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:79.170.40.236/32 ip4:91.109.13.38/32 ip4:91.109.13.39/32 include:spf.protection.outlook.com include:sendgrid.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict 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
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
2 records- MS=ms96300387
- SPFv=spf1 mx a ip4:79.170.40.236/32 ip4:91.109.13.38/32 ip4:91.109.13.39/32 include:spf.protection.outlook.com include:sendgrid.net -all
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