In Tools, Options, Security set it as you see fit.
I've had my computer about four and a half years, three and a half of them in New Jersey with a comcast cable Modem without any real e-mail difficulites. Now I'm in So. Carolina with a dial up connection. Since I've been here many of my incoming msg, most of them in fact I have been unable to open. ( In the title area of the the e-mail there appears a symbol of a paper clip and a "warning" that says that Outlook express has removed dangerous information that may have a virus or other harmful code. Has anyone else had this problem and if so could you please post your solution to the problem if you have one or any other helpful solution that you have. Thank You