Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
aplusderr.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 06:04:35 UTC · ↺ Refresh
MX Hostnames
- aplusderr-com.mail.protection.outlook.com
MX Priorities
- aplusderr-com.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.165.134 (no PTR)
- 104.21.49.181 (no PTR)
- 2606:4700:3033::ac43:a586
- 2606:4700:3032::6815:31b5
Mail Server IPs
- 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:c931::1 ↩ mail-sa9pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
SOA Record
Raw SOA
guy.ns.cloudflare.com dns.cloudflare.com 2398226915 10000 2400 604800 1800
Primary NS (mname)
guy.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398226915
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
paislee.ns.cloudflare.com
guy.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
2 records- unbounce759195
- SPFv=spf1 include:spf.protection.outlook.com -all
Full email verification for aplusderr.com
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