I have Webmin currently installed to help manage my CentOS server and I have configued it to send email alerts for different things, backups, service failures etc. However not one email is arriving in the mailbox.
I have done a quick test by using sendmail at the command line to send an email and it worked, no log files anywhere seem to show any errors - there are just no emails arriving.
Does anyone know of anywhere else I could look to troubleshoot this?