Hello,

First off, thanks in advance for all of your help.

Now to my issue:

I am setting up my first email server. It will be for just me and a few other people. I am using an Amazon EC2 server running Ubuntu 12.04. My MTA is postfix.

As I said, this is my first time setting up an email server, so I am following a guide that Arstechnia has published (linkhttp://arstechnica.com/information-technology/2014/03/taking-e-mail-back-par... ).

My issue comes when I try to create a hashed of my passwords. I have tried entering the command, "doveadm pw -s SSHA512". When I do this, I get the error message, "doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/99-mail-stack-delivery.conf line 6: Unknown setting: ssl_client_ca_dir".

I have tried running that command with sudo and as root, but I still get the exact same error message.

I had configured /etc/dovecot/conf.d/99-mail-stack-delivery.conf earlier on, and line 6 of that document says, "ssl_client_ca_dir = /etc/ssl/certs" which is exactly what the ars guide told me it should say.

What have I done wrong?

Thanks again,

Daniel