The install guide tells me to rename my .mailfilter file. After "Installation of Bogofilter" i was inside /var/www/virtual/..myusername../bogofilter-1.2.5 – there was no .mailfilter. But in my home directory ~ there is also no .mailfilter file.

https://github.com/bhopmann/uberspace7-mailfilter/blob/master/README.md#L35

Install commands

I think https://github.com/bhopmann/uberspace7-mailfilter#installation-of-bogofilter should be

./configure --with-database=sqlite3 --prefix=$HOME
make
make install

right?

~/bin/spam-learn

After make install bogofilter 1.2.5 i can not find the given file

If spam-learn is executed and found new spam I receive a mail with the message:

dumpvuser: No such user

It seems there is a conflict between : and . in my dumpvuser. My Name is firstname.lastname but my directory is ./users/firstname:lastname as explained here https://wiki.uberspace.de/mail:dotqmail

My question is now if this is something the script is not aware of or do / can I adjust my qmail-configuration?

If you use a catchall mailbox with uberspace, the emails are not assigned correctly:

uberspace mail user list
+
test1
test2

Since there will always be only one catchall-mail, the assignment of mailbox (test1) and catchall (+) as new configuration parameter in e.g. .mailfilter[] would be a solution

Alternatively the mailbox can be read via uberspace mail catchall status