I’ve got a Linux CentOS Server, running CPanel as the server management software. I have use Google Apps for Business as my email provider and recently have received multiple calls from customers stating that their emails just Bounce.
Run the following to replicate the receipt of the email using SSH
exim -bs -d
mail from: firstname.lastname@example.org
rcpt to: email@example.com
Read the log entry for this test
exigrep firstname.lastname@example.org /var/log/exim_mainlog