Adding new address to sendmail.
 

Hy,

im running sendmail and would like to add new addresses to it. One way is to create system accounts and then eventually use aliases file. But i think creating a huge number of system accounts just for these purpose is pretty unsecure. Can i run sendmail, using just one system account and add others just to sendmail? and how can i do this?

Let me illustrate the situation with an example:
i have a system account named info and e-mail address info@zwars.com
now, i'd like to add e.g. 20 e-mail addresses, like: person.one@zwars.com..., but i don't wat to create for each one of them a system account. How can i do it?

It is possible but it really depends on what MTA you are using and how/where you want to store the e-mails.

Without creating system accounts, you must either send all the mail to your one account or forward it to other account on a remote system. All of this is done through the aliases file. If you want each mail address to be delivered for pickup by a separate person, then you must create a system account for each person (you don't need to use the alias file if they have a system account).

Assuming you don't need wildcarding, your sendmail aliases file should do the trick - man aliases(5).