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## 2. File Roadmap

We will put all of sendmail's configuration files in a separate directory under `/etc`: `/etc/mail`. Usually, sendmail will expect these files to reside directly under `/etc`. To avoid problems, `/etc/sendmail.cf` should be a symbolic link to `/etc/mail/sendmail.cf`.

The following files will populate `/etc/mail`:

- =20
- `aliases` - contains additional local addresses
- `genericsdomain` - contains some information on your local host's configuration
- `genericstable` - contains the actual rewriting rules.
- `sendmail.cf` - sendmail's configuration file
- `sendmail.mc` - the source of `sendmail.cf`.

Some of these files will be accompanied by `.db` files. They contain hashed databases for sendmail's direct use.

We assume that the `cf` part of sendmail's source tree resides under a directory named `/usr/lib/sendmail.cf`. This is the case on Debian GNU/Linux systems. Other distributions will put this stuff at different places. Please refer to your distribution's documentation for details.

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