Originally Posted by falko
Both Postfix and Exim are mailservers. If you have Postfix installed, then Exim is not installed, and if Exim is installed, then Postfix isn't.
Courier is the POP3/IMAP server (that you use to fetch mails from the server).
I have answered to your in your other thread.
Thanks for resolving the message_size_limit problem :-)
When I was searching for message_size_limit
if found that line:
/etc/exim4/conf.d/main/02_exim4-config_options:message_size_limit = MESSAGE_SIZE_LIMIT
That seem to me that exim and postfix are installed. Is'nt it?