Hello to everyone! I'm Helenni, and my native language is Russian, so I'm sorry for possible mistakes.
I have a friend who lives in USA. He helps me to learn English. He corrects my letters. I appreciate this correspondence and his help very much.
But...he often attaches some strange files to his letters: winmail.dat (application/ms-tnef, 20K)
They always have a different size. When I delete this files or the whole letter, he sends them again.
I tryed to open some of them, but I just couldn't open them in any programs I had tryed.
Please help me to know what stuff he sends. Is it dangerous for my PC?
I have no reasons not to trust to my American friend, but he ignored my question about those files.
What do you think? I can try to send one of this files if anybody is interested and wants to help.
Thank you in advance!