What are you trying to do? concrete5 doesn't include a mail server.
There's stuff for hooking into an existing one however, perhaps that's
what you're looking at. Regardless.. Upgrade. ;)

best wishes

Franz Maruna
CEO - concrete5.org
http://about.me/frz

It's for the Forgot Password and form post messages. They have a dedicated server running Windows 2003 and IIS. IIS has an SMTP server running that relays messages for C5. However, their host recently blocked that. They have to send messages via their host's SMTP server. I configured the local SMTP server to relay to the host's SMTP server using a smarthost setup, but IIS is reporting a lot of semophore timeouts and not all the emails are going out.

Does C5 have it's own SMTP server configuration or does it pull something from the php.ini?

Hi there, yeah you really want to get out of 5.3.2. Lots of great stuff has happened since then.

To answer the email question, concrete5 uses php's default mailer by ... default, so in more or less every case that should work fine out of the box, unless you're having some troubles on your server.

You can add an external SMTP if you prefer. That setting is located at under the "Email" tab from your dashboard's "Sitewide Settings." It has all the options of any standard mail client so you can set it up like you would in Outlook or whatever.