I recently have had a user complain to me that all her emails coming in from here clients with signatures (picture) and attachments are being converting in her inbox as .dat files. She can not retrieve the files and needs to send to her personal mail. She is the only one so far and do not want this to start to become a company wide issue. I read some where that there is a way to tell Exchange not to covert to dat files. any help would be completely appreciated.