Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rrsc.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 18:14:12 UTC · ↺ Refresh
MX Hostnames
- rrsc-com.mail.protection.outlook.com
MX Priorities
- rrsc-com.mail.protection.outlook.com: 10
A / AAAA Records
- 40.86.168.215 (no PTR)
Mail Server IPs
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1184.awsdns-20.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1184.awsdns-20.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-69.awsdns-08.com
ns-1007.awsdns-61.net
ns-1184.awsdns-20.org
ns-1852.awsdns-39.co.uk
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:192.40.108.0/24 ip4:63.159.201.59/32 ip4:208.210.221.251/32 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com include:amazonses.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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- SPFv=spf1 mx a ip4:192.40.108.0/24 ip4:63.159.201.59/32 ip4:208.210.221.251/32 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com include:amazonses.com -all
- atlassian-domain-verification=BEUW3pJfStauweHIwJqbMHao9jfyoayyyThoL/Hxk2nONk8w9vkfVzy47Onm11QG
Full email verification for rrsc.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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