Any leads on how to setup a RedHat 7.2, running sendmail 8.12 and pop3 to be a mail server for two different domain names with different users. Help is greatly appreciated.

Yup, setup virtual domains or users, etc. Your probably better off reading up on sendmail, it can be a beast to configure and I recommend reading up on it to get any type of grasps on it.

Or try exim. Much much easier to configure and maintain.

-twantrd

If the users are different (i.e. if you are not going to have user1@domain1.com and user1@domain2.com) the just add the 2 domainnames in /etc/mail/local-host-names

This is a script I wrote to do it all with a single command. - though it assumes you have already added the new domain to to Sendmail's local host names.

To do this first step:
cd /etc/mail/
pico local-host-names
Add a line to /etc/mail/local-host-names with the value of your domain name.
This tells sendmail what domains it responds to as local. In other words, mail to these domains will be delivered to local users if they exist or bounced if they don't exist.

You put this script in the bin directory of your home directory (from memory), then create a symbolic link to it so that you can run it from anywhere ... can't remember where the hell I put the symbolic link ... (it was my first script)


# addmail.sh - Adds new email address
#####################################
# Takes 3 compulsory options: email address, password and system username

# Define the usage statement as a variable
usage="USAGE: addmail -e email -p password -u username"

# The correct number of positional parameters is 6 (3 options & 3 arguments)
# Check the number of positional parameters and exit if incorrect
nopt=$#
if [ ${nopt} -ne 6 ]
then
echo "ERROR: Incorrect number of positional parameters"
echo "${usage}"
exit 1
fi

# As getopts peels the command line options off, it stores them in variable opt
# Use opt as the test value in the case statement
# For each option, assign the arguments passed ($OPTARG) to a variable
# Define a default case that prints usage and exits if invalid options are used
while getopts ":e:u:" opt;
do
case $opt in
e ) eopt=$OPTARG ;;
p ) popt=$OPTARG ;;
u ) uopt=$OPTARG ;;
\? ) echo ${usage}
exit 1
esac
done

# Check whether the Virtusertable file has been backed up already today.
# If it has not been backed up, then back it up using today's date
today=$(date --iso-8601)
if [ ! -e /etc/mail/virtusertable.${today} ]; then
cp /etc/mail/virtusertable /etc/mail/virtusertable.${today}
fi

# Create the user and re-enter the password (-p sometimes fails)
# Change the permissions on the mailbox and add the user to the virtusertable
# Then make the mail file, restart sendmail and print out the user details
# Use the options passed to the addmail script
# Only execute each command if the proceeding command completed successfully
adduser -g mail -d /home/${uopt} ${uopt} &&
echo "${popt}" | passwd --stdin ${uopt} &&
chown -R ${uopt}.mail /home/${uopt} &&
echo "${eopt}"$'\t'"${uopt}" >> /etc/mail/virtusertable &&
make -C /etc/mail &&
/etc/rc.d/init.d/sendmail restart

echo "Email: ${eopt:-"Did not use option -e"}"
echo "Password: ${popt:-"Did not use option -p"}"
echo "Username: ${uopt:-"Did not use option -u"}"

woops .. smiley face screwed the script, that line should read

while getopts ":e: p :u:" opt;

but without the spaces in front and behnd the p

Thanks Kava_kicks, What exactly does the script do?

As per trickykid's recommendation, I did some readings and got sendmail to work for domain1.com and domain2.com. But as we all know, the problem is when you have joe@domain1.com and another person named joe@domain2.com. Would your script solve that problem? -- Kevin

Hi,

My script just makes it easier to add email addresses, by combining 4 or 5 commands into a single command.

My script will not directly solve the problem you are having, but the problem is easy to solve anyway.

All you need to do is set up the system users with unique names.

The easiest way to do this is to create the following two users:
domain2_joe and domain1_joe

In otherwords, domainname_username (reverse of their email address essentially).

The only problem I have had with this method is that there seems to be a limit to the size of a system accounts length.

So, if you have joe@reallyreallylongdomainname.com .... you may find the username truncated.

The benefit of doing it this way is that all of your users will be grouped by domain. So if you decide to delete a domain and all associated accounts, you can just delete all users that have the name domain_***

This should fix your issue nicely.

Thanks again for your prompt reply. If you would kindly respond; There are two question left for me.

1- Would the user be a regular system user or pop only user?

2- When you say
would their e-mail address be domain2_joe@domain2.com and domain1_joe@domain1.com? Or there is a way to make their e-mail addresses joe@domain2.com and joe@domain1.com?

1- Would the user be a regular system user or pop only user?
- The user would be a pop only user (though this depends on hwo your groups are set up...something I didi not include in my script and which I did not set up in the first place)

2- would their e-mail address be domain2_joe@domain2.com and domain1_joe@domain1.com? Or there is a way to make their e-mail addresses joe@domain2.com and joe@domain1.com?
- There email addresses would be joe@domain2.com and joe@domain1.com, but their system usernames would be domain2_joe@domain2.com and domain1_joe@domain1.com. In the virtusertable, they would look like this:
joe@domain2.com domain2_joe
joe@domain1.com domain1_joe

Thank you.

No problem