Recently when I tried to send an e-mail using Windows Live Mail with pdf. attachments I got either a delivery failure notice or the e-mail was received but with the attachments showing as DAT files which Windows Live Mail could not open. As a test I sent a mail with the same pdf. attachments but using my service provider (Fastmail) directly and the e-mails were received with the correct pdf. attachments which Windows Live Mail could open.
This seems a new problem. What can I do to over come it?
Eugene