>You didn't specify operating system but for 500,000 users I wouldn't >even go near Windows.
thanks for the feedback..we are a SUN shop so solarius is our OS of choice. >I use a healthy mix of Postfix as the mail server >and Courier-IMAP for POP3/IMAP delivery. They both work extremely well. Chris -- Chris Horry "Don't submit to stupid rules, [EMAIL PROTECTED] Be yourself and not a fool. PGP: DSA/2B4C654E Don't accept average habits, Amateur Radio: KG4TSM Open your heart and push the limits."