[Exim] Strange message

Hi,

Letaly i get tons of messages like this one in my logfile:

2004-06-14 23:26:19 1BZyyB-0006gv-4N malware acl condition: unable to connect
to                                          sophie UNIX socket
(/var/run/sophie). errno=2

I suppose it's some kind of virus. Anybody can tell me what it is ? (there is
no sophie on our system ;-))

Steven