Sun Nov 6 09:48:26 EST 2005 rsc
    As I'm sure you expected, I'm not going to apply this.
    
    You have correctly listed all the reasons that we use
    the received: line - it's local time, it reflects actual
    delivery, it's standardized and easy to parse (since we
    generated it), and so on.  It's also consistent with upas/fs.
    As far as parsing the RFC822 date goes, you can just copy
    /sys/src/cmd/upas/fs/strtotm.c.
    
    The error() changes are just wrong - the Mail: prefix is
    added by error and need not be in the string.
    
    A (clumsy) alternative is to read your mail via POP3, so
    that the Unix from line is dropped completely anyway.
    In this case upas/fs will use the RFC822 date because that
    is the only choice it has.
    
    Russ