Error Occurred while Accesing Component property/method:ADD.; Error inIAttach.SaveChanges:MAPI_E_CALL_FAILED; Erro Code 0x8020009 WriteEmail Prolaim/mapimail.p(5890)?
The email you are attempting to send is likely to have reached the size limit. This is usually picked up by the size Limit of Outlook. Check the sizes of any attachments on the email, and consider resizing or removing attachments.