UberTool
Self-hosted DNS, email, and network diagnostics
Examples: example.com, 8.8.8.8, https://example.com, mail.example.com:25
Tools
MX Lookup
Find mail exchange servers for a domain
DNS Lookup
Query A, AAAA, TXT, NS, and other records
SPF Check
Analyze SPF records for email authentication
DKIM Check
Verify DKIM selector records
DMARC Check
Analyze DMARC policy configuration
SMTP Check
Test SMTP server connectivity and capabilities
Blacklist Check
Check if an IP is listed on DNS blacklists
WHOIS Lookup
Query domain or IP registration info
SSL Check
Analyze SSL/TLS certificates and configuration
Mail Tester
Send a test email and analyze deliverability