Steps to increase max message size for ActiveSync devices
Steps_to_increase_max_message_size_for_ActiveSync_devices
Problem:
ActiveSync devices downloads only 7MB starting part of a message. OR Outlook with EAS configuration downloads only starting 7MB part of large messages.
Solution:
Bydefault ActiveSync device are allowed to download 10MB size messages. There is a separate attribute "zimbraMobileMaxMessageSize" available to control max message size for ActiveSync devices.
With the help of following commands we can change/increase default limit.
su - zimbra zmprov mcf zimbraMobileMaxMessageSize "31457280" #Example to set limit to 30mb. zmmailboxdctl restart