Contains the proxy authentication.
<Proxy> <extension base="Authentication" <password type="string"/> <proxy type="string"/> <mainVersion type="xs:string" minOccurs="0"/>
Specifies the proxying user's password.
Specifies the user's ID that granted the access rights.
Specifies the version of the proxying user’s loginRequest. This ensures that the schema versions match between the proxying user’s mailbox and the mailbox that the proxying user logs into.
--For GroupWise 2012 SP1 and later.