arcserve-KB : Emails to Distribution lists fail after a successful failover of Exchange 2003

Last Update: 2014-10-31 11:56:25 UTC

XOSOFT Replication: 12.0, 12.5, 15.0

Last Modified Date:    12/06/2010
Document ID:    TEC537192
Tech Document
Title:  Emails to Distribution lists fail after a successful failover of Exchange 2003


Following a CA ARCserve RHA r15 for MS Exchange 2003 switchover, mail sent to Distribution Lists fail to be delivered while users are active on the replica server.

This issue occurs if the Expansion server for the Distribution List is set as the master server.

Expansion servers route messages that are sent to a single distribution list or group for each of the recipient objects in that list or group. When a user sends a message to a group, the Exchange server that is acting as the expansion server expands the group to its individual members. This expansion permits members of the distribution list or group to receive the message



The Expansion server for a Distribution List should be set to 'Any server in the organization'. Please follow the below instructions to change the Expansion server.

  1. In Active Directory Users and Computers, right-click the Distribution List and then click Properties.
  2. Click the 'Exchange Advanced' tab, and change the 'Expansion server' field to 'Any server in the organization' using the dropdown.
  3. 'Click' APPLY, then OK.
  4. Repeat this process on all Distribution Lists.

Figure 1

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