Overview
The ClrStream Outgoing service is used by SkyConnect and other integrated applications to deliver outbound email.
The service performs scanning and controlled relay of outgoing mail to recipient mail servers, ensuring secure and compliant delivery.
When troubleshooting delivery issues, administrators can use the Mail Trace dashboard to trace email flow from the sending domain through ClrStream Outgoing to the destination server.
Retention: Mail trace data is available for the last 15 days.
Using the Mail Trace Dashboard
Accessing the Search Interface
By default, the dashboard displays no results.
To initiate a trace:
Click Open Search at the top of the dashboard.
Define the required search criteria.
Run the query.
Defining Search Criteria
Mandatory Fields
The following parameters are required:
1. Domain
Select the sender domain from the drop-down list.
2. Start Time and End Time
Specify the date and time range for the trace.
Important Notes:
The system restricts the date range to a maximum of 5 days per query.
Use the smallest possible time window for faster performance.
Data is available only for the last 15 days.
Optional Fields
These fields can be used to narrow down results:
| Field | Description |
|---|---|
| Subject | Matches the email subject header. Leading and trailing spaces are ignored. Internal spaces are matched normally. |
| From | Sender email address (From header). |
| To | Envelope recipient email address. |
| Status | Mail processing status. |
| Queue ID | Unique queue identifier. Recommended for advanced troubleshooting. |
Query Performance & Data Caching
When a search query is executed:
The system loads all records for the selected domain and date range.
Initial loading may take several minutes.
Subsequent searches using the same domain and date range are performed against pre-loaded data for faster results.
Cache Retention Behavior
| Data Type | Cache Duration |
|---|---|
| Historical data (earlier today and older) | 8 hours |
| Current day data | 15 minutes |
Selecting Fields in the Results View
To customize visible columns:
Click Show Fields (top left corner).
Enable or disable optional fields using checkboxes.
Default fields cannot be deselected.
Field Definitions
| Field | Default | Description |
|---|---|---|
| Service | Yes | Service component processing the mail (Scanner or Relay). |
| Log Time | Yes | Timestamp shown in the local timezone of the accessing device. |
| Queue ID | Yes | Unique email queue identifier. |
| From | Yes | From header value. |
| Subject | Yes | Subject header value. |
| Message Size | No | Email size. |
| Total Delay | No | Total processing time through the service (in seconds). |
| Envelope Recipient | No | Envelope recipient email address. |
| Response Code | Yes | SMTP response code. |
| Response Details | Yes | SMTP response details. |
| Response Message | Yes | SMTP response message. |
| Bounce Service | No | Service that generated a bounce. |
| Bounce Status Message | No | Bounce queue status message. |
Understanding the Results
Every outbound email processed through ClrStream Outgoing passes through two services:
Scanner Service
Relay Service
Each email generates three log entries (rows).
Row Breakdown
Row 1 – Scanner (Rate Control Module)
Evaluates sending limits and rate policies.
If the Response Message = "queued", the message passed rate control.
Row 2 – Scanner (Content Check Module)
Performs outbound content scanning.
If the Response Message = "queued", the message passed content checks.
Row 3 – Relay Service
Attempts delivery to the destination mail server.
If the Response Message = "queued", the recipient server accepted the message.
Acceptance by the recipient server means successful handoff. Final inbox delivery depends on the recipient’s internal filtering.
Tracing Mail Status
For a Single Email
Use:
Queue ID (preferred)
Subject + From + To combination
Narrow time window
For Multiple Emails / Reporting
Run a broad query.
Download results as CSV.
Filter and analyze using a spreadsheet tool.
Downloading Results
To export search results:
Click the down arrow icon next to the dashboard title.
Download the generated CSV file.
Important Note on Time Zones
Dashboard timestamps are displayed in the local timezone of the viewing device.
Exported CSV timestamps are in UTC.
Time differences may appear due to timezone conversion.
Best Practices for Efficient Tracing
Always narrow your time range before running a search.
Use Queue ID for precise troubleshooting.
Use optional filters to reduce result size.
Be aware of caching behavior when analyzing near-real-time mail flow.