It seems everywhere I look there are tons of questions about sending mail with sendmail. However I want just the opposite and can not figure out how to configure sendmail properly.
I want to set up a system on my ubuntu server to only RECEIVE mail (specifically from a whitelist). I do not want it to have the ability to send mail, I want that feature disabled. I just want to drop the mail into a folder, and another program I have would be doing the sending of it.
Any advice on how to set it up to do this. Currently have sendmail installed with basic config settings, but having never set up a mail server before I am at a loss how to achieve this. Thanks