In the General Information tab configure the following:
Most results returned by GAL search. This sets a global ceiling for the number of GAL results returned from a user search. The default is 100 results per search.
Default domain. The default domain displays. This is the domain that user logins are authenticated against.
Maximum number of scheduled tasks that can run simultaneously. This controls how many threads are used to process fetching content from remote data sources. The default is 20. If this is set too low, users do not get their mail from external sources pulled down often enough. If the thread is set too high, the server may be consumed with downloading this mail and not servicing “main” user requests.
Sleep time between subsequent mailbox purges. The duration of time that the server should “rest” between purging mailboxes. By default, message purge is scheduled to run every 1 minute. If the message purge schedule is set to 0, messages are not purged even if the mail, trash and spam message life time is set
Maximum size of an uploaded file for Documents or Briefcase (kb). This is the maximum size of a file that can be uploaded into Documents or Briefcase. Note: the maximum message size for an email message and attachments that can be received is configured in the Global Settings MTA tab.