Says it all really. Our Qmail SMTP servers support the ESMTP TLS extension and I want our Exchange 5.5 server to be able to interact with them with encryption. I have used the keygen.exe to generate a cert request, but openssl doesn't seem to know what format it is. Can someone tell me how to sign that with openssl, and how to convert that into a signed-cert Exchange would import? Thanks -- Cheers Jason Haar Unix/Network Specialist, Trimble NZ Phone: +64 3 3391 377 Fax: +64 3 3391 417 ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]