Back to How it Works Index
Technical Deep-Dive

Credentials Vault & DNS Compliance Flow

Understand the core mechanics, queues, and logic routines running on our servers when processing this module.

System Execution Pipeline

Below is the step-by-step sequence of events executed by our background workers.

1

Add SMTP Account

User inputs email credentials in the Connection Wizard.

2

Live SMTP Check

System triggers an EHLO SMTP handshake. If validation passes, credentials are encrypted and stored.

3

OTP Dispatch

An OTP is sent to that specific email inbox. Once validated, status changes to PENDING_DNS.

4

DNS Scan

Background workers resolve the domain's TXT records to confirm SPF, DKIM, and DMARC are active.

5

READY Status

The account joins the active sharding rotation pool.

Developer & Architect Notes

Technical Architecture

This module operates as a stateless service hosted across horizontally scalable server nodes. Distributed state coordinates through highly optimized Redis transactions to ensure consistency without deadlocks.

Vault CryptographyAES-256-CBC with Node.js Crypto
DNS Resolutiondns.resolveTxt + dns.resolveCname

Edge Fail-Safe Rules

Critical protocols (like connection failure retries, cool-down timers, and data limits) are verified before outbound dispatches. Failures degrade gracefully, prioritizing list health and preventing blacklisting.

Verification Window10-Minute Sliding Window
Quota DatabaseMongoDB Plan Enforcement Layer