You want to reconfigure something but you do no know the name of the package
You can install the configure-debian package which will provide you a list with all the packages which can be reconfigured!
See also the following KB Articles:
How do you find out which packages on a debian system can be configured with debconf?
How is a debconf package configured under debian
How to know which package can be configured with debconf on debian
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.