Well not really but here are some good pointers (i.e. things I learned about sendmail today).To ensure that you have port 25 opened:
"telnet domain.com 25"
Connected to domain.com.
Escape character is '^]'.
220 localhost.localdomain ESMTP Sendmail 8.12.8/8.12.8; Sun, 30 Nov 2003 00:46:13 -0600
If you see the following then sendmail is listening on port 25 waiting for incoming email.
Did you know that Reh Hat 9 (maybe previous) version of redhat, do not include the program you need to configure sendmail.cf?
You will need sendmail-cf.VERSION.rpm
rpm -ivh sendmail-cf.rpm
To stop and start (restart) sendmail:
Once you are done editing your sendmail.mc file and you want to apply your changes, do this and then restart sendmail:
m4 sendmail.mc > sendmail.cf
More to come, but it is late, and I finally got email working again here at my job :–) No one is going to kill mey yay!