I am using evolution as my mail client on Ubuntu and sometimes the atachemets sent from a windows machine arive as .dat file. Do you know a fix for this ?
What is the exact file name? If it is
See e.g. this Wikipedia article: http://en.wikipedia.org/wiki/TNEF
There's software to decode these attachments; it's listed in the article.
For Evolution to be able to read the Microsoft proprietary packaging of attachments, you must:
I Hope it will help you.