Odd problem; just wondering if anyone else has come across this... We seem to be having a problem with local mail delivery to some groups. If someone sends an email to a group of recipients, not all group members receive the email. The groups all contain nested sub-groups within them. The odd thing is that it seems if the user only adds one group to the recipients list, it seems to send too all group/sub-group members. If she adds multiple groups, some recipients do not receive the email. Has anyone run across this before? Any ideas as to where to look?