>> It appears that our firewall is not allowing connection to outside MX >> hosts. I think I need to configure sendmail to forward emails to our >> local smtp host, but I am not sure how to do that. >> Best to do that anyway. Some e-mail providers will only accept e-mail from known mail servers (AOL) and bounce if the IP of your sending server is not a static, known mailserver. What you want is 'SMARTHOST'. DSmy.mail.server.com in sendmail.cf or define(`SMART_HOST', `my.mail.server.com')dnl in sendmail.mc -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20080701/501dbd7d/attachment-0003.html>