Get attachment sizes
# zmprov gacf | grep zimbraMtaMaxMessageSize
zimbraMtaMaxMessageSize: 20480000
# zmprov gacf | grep zimbraFileUploadMaxSize
zimbraFileUploadMaxSize: 20480000
Change sizes:
zmprov mcf zimbraMtaMaxMessageSize 20480000
10240000 = 10mb
20480000 = 20mb
30720000 = 30mb
