[SOLVED]: OTRS keeps to reopen tickets

when OTRS reopens consistently the tickets you have several options to resolve an issue

1. Disable state change with following options

PostMasterFollowUpState='open' # to keep ticket open
PostMasterFollowUpStateClosed='closed' # to keep ticket as closed if it was already closed

2. Disable followup mails individual per queue in Queue-Admin management using FollowUp combo box.

It exists also undocumented feature you can set default value for combo in Config.pm file
# 1-possible, 2-reject, 3-create new ticket
$Self->{'AdminDefaultFollowUpID'} = "3";


Enjoy!