The problem you're having is what's commonly known as backscatter. This is a postfix issue (or rather, a problem with the SMTP proto itself) rather than a policyd issue.
Take a look at http://www.postfix.org/BACKSCATTER_README.html for some combatting methods. --Jon -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sam Przyswa Sent: 16 April 2008 14:53 To: Policy Users Subject: [policyd-users] Mailer-daemon returned mail... Hi, After installing Postfix-Policyd it work fine and seems very efficient but I got a lot of mailer-daemon returned mail from spamers who used some valid users addresses form our domain to send spam on others systems. And if these mails aren't delivered the mails back to my users with 554 SMTP error who don't understand because they never sent these mail ! How to fix this problem ? Thanks in advance for your help. Sam. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javao ne _______________________________________________ policyd-users mailing list policyd-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/policyd-users ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ policyd-users mailing list policyd-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/policyd-users
