[Samba] log.ham01.16.16.16.16.16.16.16.16.16.16.16.16.16.16.16

[Daniel Betschart]

On a system that I set up over a year ago, a lot of log files have
suddenly been created for about a week. These sometimes have a lot of
numbers at the end of the file name.

Where do they come from and how can I prevent them from being created?

Debian 10 Buster
Samba 4.9.5

As an example, such a file name under /var/log/samba:
log.ham01.16.16.16.16.16.16.16.16.16.16.16.16.16.16.16