Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
grossercpa.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 14:16:58 UTC · ↺ Refresh
MX Hostnames
- grossercpa-com.mail.protection.outlook.com
MX Priorities
- grossercpa-com.mail.protection.outlook.com: 0
A / AAAA Records
- 198.49.23.145 (no PTR)
- 198.49.23.144 (no PTR)
- 198.185.159.145
- 198.185.159.144
Mail Server IPs
- 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
- 52.101.11.9 ↩ mail-sn1pr02cu00101.inbound.protection.outlook.com
- 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns20.firstlink.com support.firstlink.com 2023031602 3600 1800 1209600 86400
Primary NS (mname)
ns20.firstlink.com
Admin Email (rname)
support@firstlink.com
Serial
2023031602
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns22.firstlink.com
ns21.firstlink.com
ns23.firstlink.com
ns20.firstlink.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- v=verifydomain MS=5363223
- SPFv=spf1 include:spf.protection.outlook.com -all
- google-site-verification=7KcFdSMPBZQGShK7K09EmiWpKA4DS-wnDtmcscfUZM4
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