Hello, First time I am using stunnel. 1. The issue I had is with Altiris and Exchange. All our Exchange Servers are SSL now and Altiris is not-SSL. Altiris is reading an exchange mailbox and gives back an error : "Error receiving data from socket". So the infrastructure is composed of two servers one Altiris Server not-SSL which is attempting to communicate to an Exchange Server with SSL. The Altiris Server is trying to read the email in one mailbox hosted by an Exchange SSL Server 2. Stunnel 4.25 x86-pc-mingw32-gnu with openssl 0.9.8h 28 May 2008 3. Windows 2003 Server environment 4. stunnel -d -r 5. 2008.07.07 13:34:41 LOG7[4748:1676]: RAND_status claims sufficient entropy for the PRNG 2008.07.07 13:34:41 LOG7[4748:1676]: PRNG seeded successfully 2008.07.07 13:34:41 LOG7[4748:1676]: Certificate: stunnel.pem 2008.07.07 13:34:41 LOG7[4748:1676]: Certificate loaded 2008.07.07 13:34:41 LOG7[4748:1676]: Key file: stunnel.pem 2008.07.07 13:34:41 LOG7[4748:1676]: Private key loaded 2008.07.07 13:34:41 LOG7[4748:1676]: SSL context initialized for service pop3 2008.07.07 13:34:41 LOG5[4748:1676]: stunnel 4.25 on x86-pc-mingw32-gnu with OpenSSL 0.9.8h 28 May 2008 2008.07.07 13:34:41 LOG5[4748:1676]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2008.07.07 13:34:41 LOG5[4748:3596]: No limit detected for the number of clients 2008.07.07 13:34:41 LOG7[4748:3596]: FD 284 in non-blocking mode 2008.07.07 13:34:41 LOG7[4748:3596]: SO_REUSEADDR option set on accept socket 2008.07.07 13:34:41 LOG3[4748:3596]: Error binding pop3 to 149.142.194.230:995 2008.07.07 13:34:41 LOG3[4748:3596]: bind: Can't assign requested address (WSAEADDRNOTAVAIL) (10049) 2008.07.07 13:34:41 LOG3[4748:3596]: Server is down 6. no file gcc. Thanks, Dominique Dominique_duchemin@hotmail.com