Sender Mail adapter

Hi,

If i have to trigger a mail to multiple Recipients using a mail sender adapter, is there any aditional configuration.

I have made the occurance in the data type into "1:unbounded". In SXMB_MONI the message is successful and also the payload of the response contain multiple " TO (i.e more than one)". But in the runtime worbench the status is waiting and the error is "Exception caught by adapter framework: Failed to call the endpoint". what might be the problem.

cheers,

Anup