SBS 2003 sp2, Exchange installed, POP3 Connector configured and working, all emails coming through until today. All the sudden two of the Outlook clients who reached near limit (165,000 KB) on mailbox side can no longer send or receive. I have tried to override with mailbox settings and it didnt work, so I went to the Mailbox store and set the "prohibit send receive" up to maximum value and still the Outlook clients(2003) still cant send. I then restarted the server hoping that would update the new settings to no avail. If anyone has any ideas why changing the limits in the mailbox store and alternately trying to do an override from AD Exchange General would not work, please help. Thanks for any info you have.