Question
Is it safe to remove the .pck files found within the/usr/local/cpanel/3rdparty/mailman/data directory?
Answer
Removing the data within the referenced directory (/usr/local/cpanel/3rdparty/mailman/data) outright can result in issues with mailman. However, the mailman service does offer a method to remove the .pck files found within this directory. This process is described within the article found here.
Please note however, that the discard option detailed within the article will be found here:
/usr/local/cpanel/3rdparty/mailman/bin/discard
I hope this information was found to be helpful. Should you have any further questions or concerns, please feel free to let us know.