-Depends: postfix, postfix-tls, carnet-tools-cn (>= 2.7), sasl2-bin, libsasl2-modules, debconf, openssl
+Depends: ${misc:Depends}, postfix (>= 2.9.6-2), carnet-tools-cn (>= 2.7), sasl2-bin (>= 2.1.25), libsasl2-modules (>= 2.1.25), debconf, openssl, adduser