Which password plugin I can use with password-file?

[thomasho]

Hi,

I conifg virtual user and virtual domain in mail server..

virtual user's password is store in password file.

Code Select Expand

  passdb passwd-file {
    # [scheme=<default password scheme>] [username_format=<format>]
    # <Path for passwd-file>
    args = username_format=%n /etc/virtual/%d/passwd
  }

and I use "htpasswd" to creat user password or change password..

In my case,which password plugin can I use?