Ipswitch IM is preventing you sending a message to a specific user. This is normally accompanied by a message to similar to the following; 

 

’<< Error: not sending message to usera@tims.net. User userb@tims.net has been blocked from sending messages. >>’ 


To resolve this error follow the steps below


STEPS:

  1. Load up the main Ipswitch window 
  2. From the menu at the top of the window select ‘View’ and then 'Options'
  3. Scroll down the ‘Categories’ and select ‘Privacy’ 
  4. A list of users who are blocked by you are displayed. Click on a user and press ‘Remove’ 
  5. Click ‘Ok’ 
  6. You should now be able to send messages to this user