Resolution
fact
Domain Migration Administrator 7.1
symptom
Error: 'Two objects in the directory have the same proxy'.
cause
When performing an intra-forest migration where the target domain is in mixed mode, Domain Migration Administrator (DMA) performs a copy rather than a move. If the source accounts have Exchange mailboxes on another domain the 'two objects have the same proxy' error may be seen when mail is sent to the recipient.
fix
Upgrade the target domain to Native mode so Domain Migration Administrator performs a move rather than a copy. This carries all of the account properties with the account including the Exchange properties. During a copy, Domain Migration Administrator will not copy Exchange properties.
Domain Migration Administrator 7.1
symptom
Error: 'Two objects in the directory have the same proxy'.
cause
When performing an intra-forest migration where the target domain is in mixed mode, Domain Migration Administrator (DMA) performs a copy rather than a move. If the source accounts have Exchange mailboxes on another domain the 'two objects have the same proxy' error may be seen when mail is sent to the recipient.
fix
Upgrade the target domain to Native mode so Domain Migration Administrator performs a move rather than a copy. This carries all of the account properties with the account including the Exchange properties. During a copy, Domain Migration Administrator will not copy Exchange properties.
Additional Information
Formerly known as NETIQKB10753