<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">Hi all<br><br>Thank you for the responses..but yesterday I used postfix access table format to block null sender..<br>and it seems that my mail server have not received undelivered mail message starting from yesterday..<br><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">----- Original Message ----<br>From: Drew Marshall <drew@technologytiger.net><br>To: MailScanner discussion <mailscanner@lists.mailscanner.info><br>Sent: Tuesday, January 9, 2007 6:28:11 PM<br>Subject: Re: Reject bounce email<br><br><div>On Tue, January 9, 2007 04:26, anas asree wrote:<br>> Hi all<br>> I've installed Postfix+Mailscanner+Mailwatch on SuSe 10.0<br>><br>> My users have been receiving a lot of
undelivered mail message from<br>> outside of our network. These emails have made our users complaint to us,<br>> although they did not send such email..<br>><br>> How can I reject such emails from bouncing back to our users mailbox ?<br><br>Are you rejecting unknown senders in Postfix? Usually these bounce spams/<br>Jo Job attacks are targeted at random names and you can reject the<br>majority by using recipient maps of some kind.<br><br>If you can post an example set of headers there might be some other things<br>that can be done.<br><br>Drew<br><br>-- <br>MailScanner mailing list<br>mailscanner@lists.mailscanner.info<br><a target="_blank" href="http://lists.mailscanner.info/mailman/listinfo/mailscanner">http://lists.mailscanner.info/mailman/listinfo/mailscanner</a><br><br>Before posting, read <a target="_blank" href="http://wiki.mailscanner.info/posting">http://wiki.mailscanner.info/posting</a><br><br>Support MailScanner development - buy the book off the
website! <br></div></div><br></div></div><br>__________________________________________________<br>Do You Yahoo!?<br>Tired of spam? Yahoo! Mail has the best spam protection around <br>http://mail.yahoo.com </body></html>