I am a sendmail genius!

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"
Trying XXX.XXX.XXX.XXX...
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:


/etc/rc.d/init.d/sendmail stop
/etc/rc.d/init.d/sendmail start


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!




-dm