One more question: Can Exchange 5.5 server understand SSL commands sets and Transport Layer Security (TLS) command sets? If it can, can SMTP run over SSL or TLS? Many thanks. -----Original Message----- From: Huang, Li-Ming Sent: Friday, January 23, 2004 2:11 PM To: [ExchangeList] Subject: [exchangelist] Secure Communication http://www.MSExchange.org/ Hi All, Is there any way we can set up a secure SMTP communication channel between Exchange 5.5 IMS server and Exchange 2000 SMTP server? Thanks. -LiMing ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------