fmlalias (/usr/local/bin/fmlalias) shows all aliases. Precisely speaking, it shows all aliases defined as valid aliases of Postfix. % fmlalias The difference between "fmladdr" and "fmlalias" is whether it contains users defined at /etc/passwd or not. "fmladdr" contains it but "fmlalias" not. "fmlalias" lists up all users defined at aliases.