hi, can anybody help me with postfix and mailman configuration, the issue is that mailman tries to send the mail to all list members and cant do it, the mailman smpt-failure log says : Mar 05 09:14:02 2002 (4719) -1 ggutierrez@puj.edu.co (ignore) I think the problem is related with the mailman group id (GID) , because postfix is well configured and it can send mail to all users independently. thanks JPL