The input is processed as an INN expirerm file listing or an INN cancel stream written as a WC entry in the newsfeeds(5) file. This data consists of lines of text, each containing a list of relative article pathnames, with a single space between entries. If a listed file is contained in an IMAP news mailbox, it is expunged out of that mailbox. In any case, each listed file is unlinked.
Rmnews reads its configuration options out of the imapd.conf(5) file. The optional newsprefix option specifies a prefix to be prepended to newsgroup names to make the corresponding IMAP mailbox names. The required partition-news option specifies the pathname prefix to the IMAP news mailboxes. The value of partition-news concatenated with the dots-to-slashes-converted value of newsprefix must be the pathname of the news spool directory.