You didn't say which is "the affected user." The symptoms suggest that A is B's delegate.

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Sam Speight wrote in message ...
Ok so i have removed the users from the send on behalf field of the affected user. But still this is what happens. User A sends request to B. User A gets the request come back to them asking them to accept on behalf of user B! Before that user C was getting the request 'sent on behalf of' user B. Is that the same as you? I am convinced that this is some weird bug as after questioning the users they say that they do not actually use the send on behalf function at all. I am the only one who could have put it there...

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