External customer's attachment gets stripped and a "WINMAIL.DAT" replaces it

Some mail accounts need to have ‘PLAIN TEXT’ emails versus rich text or HTML.  

·         Go into the sender’s contacts folder

·         Right click on the contact and select ‘Outlook properties’

·         Force all emails that go to that specific person be

o   plain text

o   rich text

o   HTML

Email properties of a Contact

Open the Contact (in the contact folder) and right click on the email address.

In the Email properties change Internet Format to: Send Plain Text Only 

Changes made here apply to all messages sent to this person.  

Catch – Outlook will look in the ‘suggested contacts’ before it looks in the ‘contacts’ folder for any user it sends emails to. Make sure that the account in question ONLY exists in one location.