Re: [CentOS] Sendmail

Paul Heinlein wrote:

In addition to Mike's answer about editing /etc/mail/sendmail.mc, it's worthwhile mentioning netstat and lsof as general-purpose diagnostic tools:

# to discover on what tcp ports we're listening netstat -tl

# to discover to what ports sendmail is bound lsof -iTCP -n | grep sendmail

The output of these tools won't tell you how to fix the problem, but they might give you a better glimpse into the problem's nature. In this case, you'd have discovered that sendmail was only bound to the loopback interface.

Thanks for the tip Paul... will make use of it when I bring it back up.