[maildropl] [maildrop] unable to create logfile

[Fabiano S. <fab...@sw...>]

Hello!

I'm installing a standard spamfilter setup with fetchmail->postfix->maildrop.
All components already work fine, except maildrop, which can't create a
logfile in my ~/.maildir:

  Nov 16 20:26:22 floatkiller maildrop[5841]: Unable to create log file.

This is my /etc/maildroprc:

  MAILDIR="$LOGNAME/.maildir"
  logfile "~/.maildir/maildrop.log"
  
  echo $LOGNAME
  xfilter "/usr/bin/spamc -f"
  
  if (/^X-Spam-Status: Yes/)
    to $MAILDIR/.Spam/ 

But it doesn't echo the $LOGNAME. maildrop is set to suid root.
Since this problem, the mail stays in the queue, and without maildrop it 
works, but then I get flooded with spam!

I hope that this is not a FAQ, but if yes, please give me a link to the home-
page. (I was "googling" for 2 hours)

Greetings,
Fabiano