[Mailman-Users] Mailman does not send email to users outside of local system

[Thomas Casey O'Neill]

Please help!

I can set up newlists and go to the website to add a user. But if the
email address is not one of the local machines it doesn't send them a
confirmation email.

Also if I create a new list and the owner is not an email from the local
machine they will not recieve the setup email.

I am running

Redhat 7.1
Sendmail
Apache

Thanks in advance!

TOM