Enterprise Infrastructure

Engineered for Zero Downtime Email Delivery

Deep dive into the core architecture powering Solidrix Send: Smart Router, Virtual SMTP Proxy, Redis Quota Manager, and Solaris AI.

Core Engine

Smart Gateway Router

Solidrix Send dynamically evaluates every outbound email against per-gateway priority weights, cost thresholds, and remaining daily/monthly quotas. If Gateway A experiences temporary rate-limiting or downtime, traffic automatically cascades to Gateway B without client application retry errors.

  • ✔ Priority Cascade & Round-Robin Routing
  • ✔ Atomic Redis Quota Counters
  • ✔ Automatic ESP Outage Isolation
// Routing Decision Log
[09:14:02] SELECT gateway_id FROM gateways WHERE active=1 ORDER BY priority ASC LIMIT 1;
→ Chosen Gateway: AWS_SES_GLOBAL (Quota: 45,210 / 62,000)

// SMTP Proxy Connection
220 smtp.solidrix.com ESMTP Solidrix Send Proxy
AUTH LOGIN (slrx_live_key...)
235 Authentication successful
Zero Client Changes

Virtual SMTP Proxy (:587)

Connect any legacy server, WordPress site, or backend app via standard ESMTP on port 587. Our Workerman daemon authenticates via API key, handles 25MB buffer overflow protection, and auto-reconnects on DB timeouts.

  • ✔ Standard Port 587 ESMTP Protocol
  • ✔ 25MB Payload Size Guard
  • ✔ Self-Healing DB Connection Daemon

AI Intelligence

Solaris AI Deliverability Assistant

Powered by Google Gemini 1.5 Flash, Solaris AI inspects your sending statistics, detects bounce spikes, and gives actionable advice for optimizing SPF, DKIM, and DMARC records across all client brands.

  • ✔ Real-time Bounce & Complaint Diagnosis
  • ✔ Brand-Scoped Log Analytics
  • ✔ Automated DNS Setup Recommendations
AI
Solaris Assistant
Online
"Your bounce rate on Gateway #2 (Resend) increased by 1.2%. I recommend updating your DKIM TXT record at resend._domainkey.yourdomain.com."