I'm sure this is a very dumb question, because I have seen several posts about it, all of which imply that there is some simple solution.
I am trying to use spamassassin by running everything through /etc/procmail, and I get the following in /var/log/procmail:
"Group mismatch error. Mailman expected the mail wrapper script to be executed as one of the following groups: [mail, postfix, mailman, nobody, daemon], but the system's mail server executed the mail script as group: "baron". Try tweaking the mail server to run the script as one of these groups: [mail, postfix, mailman, nobody, daemon],"
The dumb question is: "What is the 'mail server'?" I thought it was sendmail, but I have no idea where "baron" comes from. baron is just a user on the system. The various IDs for mailman are set to sjdm.org in the configuration file. I installed it as "root" from a Fedora RPM, and the name "baron" had no part of that. So far as I can tell, NOTHING in this system is owned by "baron" except my own account (which is, however, included in several groups).
Jon
Jonathan Baron, Professor of Psychology, University of Pennsylvania Home page: https://www.sas.upenn.edu/~baron