4. Paste the following command on a line after '.' and before 'exit 0':

iptables -t nat -A PREROUTING -p tcp --dport 25 -j REDIRECT --to 2525

This works for the other standard ports as well, here's what I've entered in the /etc/rc.local and I've made connections to the POP3 and IMAP4 host via the normal ports as well.

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

iptables -t nat -A PREROUTING -p tcp --dport   25 -j REDIRECT --to 8025
iptables -t nat -A PREROUTING -p tcp --dport 143 -j REDIRECT --to 8143
iptables -t nat -A PREROUTING -p tcp --dport 110 -j REDIRECT --to 8110

exit 0

The only thing that does not work in Mercury/32 with Wine is the SSL/TLS and you can use STunnel for Linux to allow the MercuryC SMTP client to connect  to a relay host and have the MercuryS, MercuryP and MercuryI servers support SSL connections.  See http://bugs.winehq.org/show_bug.cgi?id=14797

If you want to get MERCURY working in a Linux environment as a non-Root/Power User, perform the following:

1. Install WINE if you haven't already got it by going to Terminal and input:

sudo apt-get install wine

2. Install (or copy the MERCURY folder from Windows partition) MERCURY using WINE.

3. Goto terminal again and input the following:

sudo su root

cd ..

cd ..

gedit etc/rc.local

4. Paste the following command on a line after '.' and before 'exit 0':

iptables -t nat -A PREROUTING -p tcp --dport 25 -j REDIRECT --to 2525

5. In MERCURY, configure MercuryS to listen in on port 2525.

!

So what this will do is allow you to run MERCURY in Linux using WINE as non-Root/non-Power User user and have the operating system forward incoming connections on port 25 to port 2525 on boot, so one can run a SMTP server with MERCURY.

With instruction '4.' you can change the redirect port 2525 to any port you like; be using the same port for instruction '5.'.