nixCraft

Hi,
I need a small help from you all guys I am trying to create a group for a set of people that have e-mail so sending it to this e-mail it will reach to that set of people
example

This is the command that I Use :

sudo /usr/sbin/groupadd salesman

then I add each user to the group (the user existed already)

sudo /usr/sbin/usermod -G salesman okok1
sudo /usr/sbin/usermod -G salesman okok2
sudo /usr/sbin/usermod -G salesman okok3

then I verify that was created correctly

[alejandro@colon alejandro]$ id okok1
uid=571(okok1) gid=577(salesman) groups=577(salesman)

but when I try to send e-mail to the group it send me a Undeliverable message

can you help me please

No this is not the way to setup email groups. You need to use .forward file or using virtual tables. Do you wanna redirect/sed mail for local recipients (on same mail server) or remote mail server (user@dom.com, user@dom2.net) etc?

For local user open /etc/mail/aliases or /etc/aliases in wich aliases are specified in the format of <alias name>: <existing account>. The <existing account> should be substituted by one or more account names in form of a coma separated list.

For sales alias an e-mail sales@dom.net that should be delivered to all the users you, jerry, top etc:
save the changes and restart postfix MTA