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Collaboration Services 3.9 - User Guide

Getting started with Collaboration Services Organizing objects for synchronization Resolving synchronization conflicts Managing the synchronization process Transport management Fine-tuning and maintenance Backup, restore, and troubleshooting Appendix A: Customizing the format of synchronized data Appendix B: Collaboration Services events

Send

The Send page allows you to specify settings for sending messages to other synchronization partners. After a data packet to be sent is generated and compressed, the service performs the following procedure:

1
First, if the packet size exceeds the maximum allowed size, it is divided into multiple messages of the default size.
2
Then the messages are put in the message queue from which they are sent to the designated synchronization partner.
3
A message is kept in the queue until the service receives an acknowledgement of successful message delivery from the partner.

Collaboration Services guarantees data delivery by checking the delivery status of every message and re-sending any message for which delivery is not confirmed.

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The time interval at which Collaboration Services sends new messages from the queue can be specified with the Send messages every: option.
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You can specify the number of messages that may be sent before confirmation of delivery of a given message in the Send without confirmations: option.
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Use the Stop creating new messages if queue exceeds: option to specify the maximum queue size. Once this value is reached, no more new messages will be created. This option prevents you from running out of disk space due to long queues if a partner is not responding. As soon as a partner comes back online and starts processing the incoming messages, the queue will clean up and then new messages can be created.
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The time interval after which a message will be re-sent if is specified in the Initial timeout: option. Each time the message is re-sent, the timeout is automatically increased.
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Use the Maximum timeout: option to specify the maximum timeout allowed.

Receive

The Receive page allows you to specify the settings for receiving incoming messages.

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The time interval for checking the service mailbox for new messages is specified in the Check for new messages every: option.
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To specify a maximum number of messages that can be retrieved from the mailbox during one session, use the Retrieve per session: option.
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If the specified Session timeout: value is more than 0, then after retrieving the specified number of messages, Collaboration Services will stop the current session and wait for the specified length of time. Having an interval between sessions may help decrease the load on the Exchange server.
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If the Session timeout: value is 0, then Collaboration Services will retrieve messages continuously until all available messages are retrieved from the mailbox.

Scheduling

Message exchange between synchronization partners can be scheduled in order to decrease the load on the Exchange servers during production hours.

To schedule exchanges
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Select the Use SMTP transport scheduling check box and select the time intervals when the service is allowed to send and receive messages containing synchronization data.
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NOTE: Transport is the key to successful implementation of inter-forest synchronization. Transport, Active Directory, Calendar, and Free/Busy schedules should be carefully coordinated (especially if collaboration forests are located in different time zones) and provide a sufficient time interval for Collaboration Services to perform its activities (sending messages, accessing Active Directory, and accessing free/busy information). Otherwise, synchronization performance may be poor.

Limiting traffic rates

The Quotas page allows you to control the incoming and outgoing traffic while messages are being exchanged between forests.

Figure 11. Quota options
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