Hi, Are there best practices for avoid OS username enumeration on a mail relay? Or is it something that maybe I've misconfigured? E.g. the nmap smtp-enum-users script shows some default users.
Host is up (0.13s latency). PORT STATE SERVICE 25/tcp open smtp | smtp-enum-users: | root |_ admin I have this parameter set "disable_vrfy_command = yes" I have the default parameter "local_recipient_maps = proxy:unix:passwd.byname $alias_maps" I have tested this parameter by removing the values, but it did not seem to make a difference. Regards, Paul
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