FIDO netmail messages with FileRequest flag set ought to contain no text at all. The mailer on target node can kill such empty message after successfull transmission of requested files. Alas, some offline message editors do not allow message body to be empty. Origin lines, tear lines, empty lines and other garbage is appended to the file requesting netmail very often when it is written by BBS online users or certain QWK offline editors. Such file request persists on the target node until deleted manually by Sysop.
You can avoid sending bad freq-mail from your BBS users or from yourself if you decide to use FREQTRIM. This utility checks outgoing netmail for file requests and removes all the text from its body. The removed text is put on standard output and, optionally, to the log file.
FREQTRIM should be run from the batch file after each echoprocessor SCAN command, i.e. when a new netmail is exported from the message base. Two parameters are provided from the command line: