What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general. You are invited to get involved by asking and answering questions!

Learn more

PRTG Network Monitor

Intuitive to Use. Easy to manage.
More than 500,000 users rely on Paessler PRTG every day. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free Download

Top Tags

View all Tags

Unexpected connection drop (code: PE039)



Your Vote:



Since one day we get this errormessage:

"Unexpected connection drop (code: PE039)".

The Sensorsettings are:

POP3 Specific, TimeOut 60Sec, Port 110
Transport-Level Security, Pop3 Secific Use Transport-Level Security if available using StartTLS (default) 
POP3 Authentication, Type Without login ; Sensor Result Discard sensor result 

Last Up: 21 h 55 m POP3 Service restarted without success

connection drop pe039 unexpected

Created on Dec 22, 2017 10:25:14 AM by  Lucky (0) 1

Last change on Dec 22, 2017 11:28:34 AM by  Luciano Lingnau [Paessler]

1 Reply



Your Vote:



Hi there,

Please activate the "Write Sensor result to disk" option in the sensor's settings and forward us the log files (Result of Sensor XXX.Data.txt and Result of Sensor XXX.txt) located on the corresponding probe under "C:\ProgramData\Paessler\PRTG Network Monitor\Logs (Sensors)" via mail to [email protected]. Please provide the following ticket-id in the subject: *PAE973303*

Best regards.

Created on Dec 25, 2017 9:58:29 AM by  Dariusz Gorka [Paessler Support]

Please log in or register to enter your reply.

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.