HI：  We plan to use a 2901 as a LNS instead of 1841，do I need to buy a DATA license to use the LNS feature？Look forward to your resume，THX!

HI:  We  have a ironport s160 as a  web proxy server, it is work well in last 3 years. In our company, employees is not allowed to access internet web site for mail ,such as mail.163.com ,hotmail.com, Recently, Ali cloud instead Yahoo! Mail, I found...