just to add a little more detail. The Blocker will continue to queue mail until the disk space allocated for this task is full. Should this happen, and the Blocker can store several gigabytes of mail in it's delivery queues, the Blocker will stop accepting any new mails by giving a temporary error code and asking the sending system to try again later. This way no mails should be lost - unless your GroupWare mail system system stays down for a long time of course!!
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