The size problem occurs at the news or mail server, some are set to not
accept individual messages above a certain size. This limit has been raised
on a lot of servers now that broadband is so widespread.

Everything on the internet is sent in packets.
http://computer.howstuffworks.com/question525.htm

joevan wrote:
| The files are broken up and then rejoined at the receivers end. Large
| files can't be sent unless in packets or something like that. Agent
| forte automatically rejoins the files and your first post came through
| fine for me. It is not anything you did but the way of Usenet. That is
| why OE as a newsreader is not the best thing.