EventReporter Event ID 11127: SMTP listener: SMTP listener raised an exception#

Answer#

SMTP listener: SMTP listener raised an exception. The product recorded this while processing smtp listener; the appended event detail identifies the affected object, operation, or provider error.

Event details#

Event ID: 11127
Severity: Error
Component: SMTP listener
Windows Event Log source: Adiscon EvntSLog
Available since: 26.07
Message pattern: SMTP listener: SMTP listener raised an exception. Additional detail: {event_detail}

Possible causes#

Name resolution, routing, listener state, TLS, authentication, or protocol expectations do not match the remote service.
The remote service rejected the request, exceeded the configured timeout, or returned an unexpected response.

Immediate checks#

Record the endpoint, port, TLS and authentication mode, timeout, and complete protocol response.
Resolve the host and test the configured port from the product system.
Run the smallest safe protocol test and compare its response with the configured success condition.

Detailed procedures#

Verify listener binding and Windows Firewall rules — Confirm effective address, port, transport, owning process, and inbound policy.
Verify SMTP connectivity and mail delivery — Separate DNS, TCP, TLS, authentication, relay, recipient, and downstream delivery.
Collect an Event ID and neighboring product events — Preserve the complete event and the product events immediately before and after it.
Export configuration and collect a bounded debug log — Create a text configuration export and time-bounded debug capture, then disable debugging.

Verify the result#

Repeat or monitor the affected operation and confirm that Event ID 11127 does not recur and that smtp listener processing continues.

Evidence to collect#

The complete Windows Application Event Log entry, including all event detail.
The product name, exact version, service account, and event timestamp with time zone.
A configuration export and debug log covering the same time window, with secrets removed.

Escalation#

If the event continues after the detailed procedures, collect the listed evidence and contact Adiscon Support.