How to create your email domain in webmin

Assuming you have the server installed, the module's main page will look like the example shown below. To set up Sendmail using Webmin you will need to visit the Sendmail Configuration module, which can be found under the Servers category. Sendmail only reads the DBM files though, and re-checks them for every message received so that any change to one of the databases files becomes immediately active. Almost all of these additional files are actually in the Unix DBM database format, but are built from a corresponding text file that the system administrator (and Webmin) can edit. In addition, there are separate text and DBM format files for local domains, mail forwarding aliases, address mappings and other features discussed later in this chapter. Sendmail's primary configuration file is appropriately named sendmail.cf, and is found in the /etc or /etc/mail directory. In addition, any queued email will not be delivered. As you would expect, if the Sendmail server process is not running then it is impossible for email to be sent to your system via SMTP. Either way, the message is either delivered to a local user's mailbox or send to another system. Sendmail can accept email in two different ways - either from an SMTP connection, or by another program invoking the sendmail command with the right parameters and feeding the email to it as input.

Sendmail has no concept of 'mail users' - if you want to create a new mailbox, you will need to add a new Unix user as explained on Users and Groups. Each time a message is delivered to a user, it is appended to the file with the same name as the user in that directory, such as /var/mail/jcameron. Each user has his own mail file, typically in the /var/mail or /var/spool/mail directory. Sendmail has a one-to-one mapping between Unix users and mailboxes. It has many useful features for routing and processing email, such as aliases, domain routing and user-creatable forward files. It is included as standard with almost all variants of the Unix operating system, and works the same on all of them. Sendmail is the most popular MTA in use on the Internet today, and has been since it was first developed. 14 Configuring the Sendmail Configuration module.

2 Editing local domains and domain masquerading.

How to create your email domain in webmin