Exim compatibility: close connection + unix sockets
This patch is for sqlgrey 1.6.8, and includes patch 1664054 "Port of postgrey exim patch". It constitutes the following:
- Make sqlgrey close the connection for each request. This behaviour is specified with the --exim option. Please see the above patch for details.
- Support for UNIX sockets. The configuration file parameter "inet" has been replaced by the parameter "socket". Examples:
# Set up TCP socket on localhost, port 2051
socket = tcp:localhost:2051
# Set up UNIX socket at /var/sqlgrey/sqlgrey.sock
socket = unix:/var/sqlgrey/sqlgrey.sock