Unknown activity of filter beep

[josefko]

After installation of kubuntu 16.04 I have every time after start session an Information window with the text: Unknown activity of filter beep in the rule my filter. Ignored. I don't know even where the rules are. How can I get rid of it?

[Snowhog]

Start by searching for a file called "my filter". Open a konsole and type:

sudo find / -name my\ filter*

IF a file with that name is found, note it's location and take a look at what's in it.

[josefko]

Exact Information window with English system language is as follows:

I did not find a file můj filtr. I suspect an old firestarter, which was in the system, but I didn't find the rule můj filtr in it either.

[claydoh]

From the image, it looks like a mail filter, perhaps kmail?. If so, this is not stored in a file of it's own, but take a look in Kmail >> Settings >> Configure Filters.
There are mail filtering options to have the computer play a sound , say for example when new mail arrives.

I don't see this option specifically in 16/04's version of Kmail, but there also used to be an option in Kmail >> Configure Kmail >> Accounts that specifically was to have the computer beep when new mail arrived. Did you upgrade or preserve your configs from a previous version?

[josefko]

Information windows had more headers and only one of them had text mail in it, which unfortunately didn't read. It would be clear after first start of KMail in 16.04. So the problem was some filter with the name Unknown in KMAIL and the solution was to erase it. Thank you for helping me.