-Depends: postfix, postfix-tls, carnet-tools-cn (>= 2.7), sasl2-bin, libsasl2-modules, debconf, openssl
+Depends: postfix (>= 2.5.5-1.1), carnet-tools-cn (>= 2.7), sasl2-bin (>= 2.1.22), libsasl2-modules (>= 2.1.22), debconf, openssl, adduser, ${misc:Depends}