I know we can set the total disk storage limit size per user, and we can set the message size limit per domain.  But is there a way to set the message size limit per user?  One of our clients has office workers who routinely send large attachments (40-50MB or more) to each other with no issues.  But their field staff, operating on cellphones, have issues when sending attachments of over 10MB (especially on Verizon and especially when they have low signal strength).  The issue is that the cellphones re-send repeatedly, over and over, for weeks or months.  If we don't catch it, it can fill up the entire server.  We limit the storage size of the user, but that doesn't prevent them from sending a large file.  We'd like to set the message size limit, but only for specific users within a domain.  Is there a a way to do that in any version of SM (we're currently still working with 15.7?