[imp] Failure on message redirection

[Daniel Betz]

Hello list,

when trying to redirect an message via compose-dimp.php?type=forward_redirect I get an error called:
Failed to set sender: <email at address.de> [SMTP: Invalid response code received from server (code: 250, response: Reset OK)]
The server returns 250 RESET OK, which means that everything went fine, but imp sees this as an failure.

What can I do to make this working ?

Greetings,
Daniel