How to build a spamtrap with Postfix

What's the idea here?

Usually, spammer harvest webpages, newsgroups and mailinglists for emailadresses. If Postfix receives a multi-recipient mail and one of the recipients is to be discarded, then Postfix will discard the entire message to ALL recipients.

Add an unused,random email address on your webpage, your email signature and on your news postings.
E.g. partmaps160302@yourdomain.com
Configure your mailserver to DISCARD that emailaddress:
Add check_recipient_access hash:/etc/postfix/spamtrap in your smtpd_recipient_restrictions.
/etc/postfix/spamtrap contains:
```
partmaps160302@yourdomain.com  DISCARD
```
Then, please postmap /etc/postfix/spamtrap

© by Ralf Hildebrandt
This document contains links to external information sources that I do neither monitor nor control. I explicitly disclaim any liabilities in respect to external references.
You are getting this document without any guarantees. Any methods shown above are meant as demonstration and may be wrong in some place. You may damage your system if you try to follow my hints and instructions. You do this at your own risk!

This file was last modified 17. Jan 2007 by root