Creating a Majordomo E-Mail List

It is very wise to read the Majordomo documentation before you attempt to create a Majordomo E-Mail list.

An Unmoderated List

Once you have read the documentation, connect to your Virtual Private Server via SSH, su to root, and do the following for each list you create:

Create an empty file named for the list (my-list in the examples below) in your ~/usr/local/majordomo/Lists directory and make sure the file mode is 644.
```
% touch ~/usr/local/majordomo/Lists/my-list
```
```
% chmod 644 ~/usr/local/majordomo/Lists/my-list
```
Create a file called my-list.passwd in your ~/usr/local/majordomo/Lists directory. This file will contain the list manager's approve password for the list (file mode 600). Substitute an E-Mail list administrator password for mypassword.
```
% cat > ~/usr/local/majordomo/Lists/my-list.passwd  mypassword  ^D(control-D)
```
```
% chmod 600 ~/usr/local/majordomo/Lists/my-list.passwd
```
Create a file called my-list.info. This file will contains the initial introductory info for the list. To create this file using cat again, do the following.
```
% cat > ~/usr/local/majordomo/Lists/my-list.info 
This list is for discussions about my list.  ^D(control-D)
```

Create E-Mail Aliases like the following.

# "my-list" list
my-list: "|/usr/local/majordomo/wrapper resend -h MY-DOMAIN.NAME \
-l my-list my-list-outgoing"
my-list-outgoing: :include:/usr/local/majordomo/Lists/my-list
owner-my-list: list_manager_e-mail_address_here
my-list-request: "|/usr/local/majordomo/wrapper request-answer my-list"
my-list-approval: list_manager_e-mail_address_here

Now, give your new e-mail list a try by sending an E-Mail to my-list@MY-DOMAIN.NAME.

A Moderated List

One of the powerful features of Majordomo is the ability to create moderated lists which are controlled by a central moderator. This control prevents abuse of your e-mail list by outside parties as well as allowing the moderator to restrict frivolous postings.

Before creating any moderated majordomo e-mail lists, you should consider the following security precautions.

You probably should disable two dangerous commands in the ~/usr/local/majordomo/majordomo Perl script, namely "who" and "which". You can do this by commenting out the lines of the script:
```
#    elsif ($cmd eq "which") { &do_which(@parts); }
#    elsif ($cmd eq "who") { &do_who(@parts); }
```
It is also wise to modify your Virtual Private Server's sendmail configuration file (~/etc/sendmail.cf) so that outside parties cannot expand (EXPN) and verify (VRFY) E-Mail aliases. Add the following line as the last entry in the Options section.
```
Opauthwarnings,needmailhelo,noexpn,novrfy
```

To create a moderated Majordomo e-mail list, connect to your Virtual Private Server via SSH, su to root, and do the following for each moderated list you create:

The following three files represent what you will need for your moderated list (sample in the examples below). You will need to create these three files for each moderated list and store them in your ~/usr/local/Majordomo/Lists directory.
- sample - contains the list E-Mail addresses, one per line.
- sample.passwd - contains the moderator password (nothing else).
- sample.info - contains a description of your E-Mail list.

Create E-Mail Aliases like the following.

# sample moderated mailing list
owner-sample: me@MY-DOMAIN.NAME
sample: "|/usr/local/majordomo/wrapper resend -A -R -l \
 sample -h MY-DOMAIN.NAME sample-hidden-list"
sample-approval: owner-sample
sample-hidden-list: :include:/usr/local/majordomo/Lists/sample
owner-sample-outgoing: owner-sample
sample-request: "|/usr/local/majordomo/wrapper request-answer sample"
owner-sample-request: owner-sample

In the example above the "hidden" mailing list is actually an alias sample-hidden-list. You will probably want to change the occurrences of sample-hidden-list to be something obscure (since this is the first thing people who want to break into your list will check for).

Now that you have a moderated mailing list, you will need to know how to post to it. You must supply your password as a user defined mail header titled "Approved:". So if for example your password was mypass, you would need to add the following header to a message for it to be approved by Majordomo.
```
Approved: mypass
```