VERIFIED SOLUTION i

Portrait Dialogue - Receive mail service does not show error if password expires while running.

This is probably an issue with every version of PD before 6.1 SP2

Issue

In Portrait Dialogue (PD) if the POP3 password expires or gets changed while the MH Receive Mail Service, the service will keep running without any errors being logged, but no messages will be received.  

This could cause bounce messages to not be retrieved.

Cause

This is a bug 
The password was only checked when the service starts.

Resolution

UPDATED: April 3, 2017
The bug has been fixed in PD 6.1 SP2 which was released on 31/05/2016