Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Allowing or denying mail on a user basis
Chapter 12: Electronic Mail
Other sendmail features
By default sendmail will allow or deny mail on a domain basis. However, you
can also instruct sendmail to allow or deny mail to/from specific users within a
domain. To do this, follow the steps below:
1 Log into the Admin Console and select Services Configuration > Servers.
2 Select sendmail and click the Configuration tab. Separate configuration
files are maintained for each burb.
3 Select the Access Table file for the appropriate burb and click Edit File.
4 Add user-based allow (relay) and/or deny (reject) information to the access
table.
For example, if you want to allow mail addressed to Lloyd and Sharon but
deny mail addressed to everyone else, you would add the following lines:
# Allow mail addressed to these users
To:Lloyd@example.com RELAY
To:Sharon@example.com RELAY
# Deny mail for everyone else
To:example.com REJECT
5 Save the changes you made to file and then close the file.
Note: For additional information, see the README file in the
/usr/share/sendmail directory on the Sidewinder G2.
6 Click the Save icon to save the configuration changes and rebuild the
configuration and database files. This will also automatically restart the
sendmail servers.
Changing mail aliases
Aliases allow you to redirect mail to another person or location. (Individual
users can also use a .forward file for this purpose, see “Redirecting mail to a
different destination” on page 364.) Aliases are generally used for redirecting
mail addressed to system users such as “postmaster.” On the Sidewinder G2,
messages and other files are often e-mailed to root. By default, a root alias is
created for the administrator you set up when you configured your system. For
more information about mail aliases see Chapter 19 of the UNIX System
Administration Handbook.
Aliases are stored in the /etc/sidewinder/sendmail directory. Follow the steps
below to edit this file:
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