Please note that I was made aware of another issue this morning with the Horde webmail client. Essentially, mail within sub-folders appears to be missing. The messages are in fact there, they are just not being displayed. I will investigate further into this issue tonight, in the mean time domain administrators are encouraged to go into Mail Settings and change the webmail interface from Horde to Roundcube until the issue is resolved. My apologies for any inconvenience.