Originally Posted by Mosquito
I ran the following to reset sendmail to match the desktop.
sudo chkconfig --levels 235 sendmail on
After this, simply restarting the sendmail service made sendmail work.
sudo service sendmail restart
I know this is old, but: Thank you, thank you, THANK YOU!
This totally fixed my issue. I was pulling my hair out knowing that sendmail was up and running, but just not configured correctly. I'm using an Amazon Web Serveces (EC2) off-the-shelf instance. Hope this helps someone else figure out sendmail on Amazon.
Also, two other settings of note:
- use an Elastic IP
- then, you need to set up a domain or subdomain for your instance