Please note that the KTK-intra mail list system has changed. New list addresses are in the form ktk-old_list_name (at) lists.oulu.fi (for example ktk-tutkimus (at) lists.oulu.fi).
Messages go through the university lists server http://lists.oulu.fi/mailman/ which make the deliver more secure and solves the problems with text formattings.
You can change your mail settings and see the archives in the lists server but it requires a special password. List memberships are still managed via intra and they update in the night to the lists server.
Here in KTK-intra (if you log in) you can see the archives without the special list password from the "Viestiarkisto 2018-" -links in the main page of the list / group.
Please, use the Search function in the right hand Shorcuts menu to find the addresses of the lists. Set the target of the search as Group.
This group or area does not have a maillist.