I am having issues with setting up RT5 to use Postfix to send emails to users. I am able to send successfully, however, they do not show up in the inbox.
When sending a command like
echo "This is a test" | mail -s "Testing" email@example.com, I am able to receive the email. However, when Request Tracker uses the sendmail command, it says, according to /var/log/mail.log that the emails were sent and queued for delivery but they do not show up in the inbox. There doesn’t appear to be any errors in the logs that I found regarding SMTP.