Mail aliases are sendmail's way of redirecting mail from some address
on your system to another destination. That destination can be a
user on your system, an email address on another system, a file or
the input to a program. Aliases apply for all domains for which
your system accepts email. Thus, if your system accepted mail for the
domains abc.com and xyz.com, an alias for the address
foo would redirect mail sent to both foo@abc.com and
foo@xyz.com.
At the top of this page is a form for entering the details of a new mail
alias. Beneath the form is a list of existing aliases and the destination(s)
for redirected email. To edit an alias, click on its name.
If you are using the Majordomo module, you may notice several aliases
like Majordomo, owner-listname or listname-request.
Do not modify these aliases unless you know what you are doing.