I have a Linode that has sendmail installed (to send email from PHP scripts, etc.) with no other MTA installed. Since all mail to our domain is handled by a mailserver outside my control, I need to be able to send email to the Linode by using it's IP address. This email will in turn be piped through a PHP script for archival purposes - so I don't need to worry about setting up a web email service, various mailboxes, etc.

What is the simplest way to do this? I tried using the instructions at http://www.ghacks.net/2009/06/05/make-s ... l-sources/ (substituting the IP address in place of the domain name) but it did not work - mail sent to webmaster@xx.xx.xx.xx was not received. Nothing happened when tailing the mail.log.

Ideas?

Get a second domain (one that you control). Use that to send emails to your Linode.

Don't even really need to register the name, just use a host file on the system(s) that will be sending email to your Linode.

Then every howto instructions on setting up email should work.

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Either provide enough details for people to help, or sit back and listen to the crickets chirp.
Security thru obscurity is a myth - and really really annoying.

I'll have to register the domain, since I also don't control the system sending the email - but yes, that is probably the simplest way of going about it. Thanks VonSkippy!