In a flurry of recycled electrons, Lloyd F. Tennison wrote:
Am having a problem where Mailman is splitting a subject and adding a "\n" and what seems to be a tab in the subject line in the mail logs.(The tab is what can be seen in the headers after the message is sent.) This of course, makes for a wrong display in mail clients.
This was just discussed last week (or the week before). In short, the subject-line folding is correct, the mail client behavour is not. Please check this list's archives for a discussion.