Hi,
SMTP is a complete different protocol than IMAP or POP3. SMTP is responsible for sending e-mail messages from a client to the server and between mail servers. It uses generally port 25. IMAP or POP3 are protocols for accesing e-mail by a client from the mail server. They use generally port 143-IMAP and 110-POP3. You have to have working SMTP server for e-mail server to work correctly, but you do have a choice how do you access e-mails on the server - via a web client or a desktop application like Thunderbird and here you can use POP3 or IMAP. You can read about the difference here:
https://mail.google.com/support/bin/ans ... swer=75725
We will not support POP3 client in epesi - you can read this post for explanation why: viewtopic.php?f=7&t=629&start=0&hilit=pop3
We also do not provide support here on this forum regarding the setup or configuration of the server, operating system, HTTP, database or mail server. In order to run epesi you have to have fully configured server with: HTTP with PHP support, MySQL or Postgresql.
We apologize, but due to limited resources we have to limit the scope of this forum to epesiBIM specific issues only.