Hello, Lately I had been getting bounce email ( spam), I do not know how to effectively proceed to solve this problem. Below is the actual email that one of the users is getting constantly, the spam filer is unable to detected. The administrator said we can't do nothing other than create a rule in outlook to trash this email. Anybody have other suggestions, please? I'm using postfix+amavisd-new to combat spam.
System Specs, 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Nov 21 15:02:08 UTC 2009 r...@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 From: Mail Delivery Subsystem [mailto:mailer-dae...@singnet.com.sg] Sent: Monday, March 29, 2010 9:07 AM To: u...@example.com Subject: Returned mail: see transcript for details The original message was received at Mon, 29 Mar 2010 23:59:29 +0800 from mx17.singnet.com.sg [165.21.74.117] ----- The following addresses had permanent fatal errors ----- <james...@singnet.com.sg> (reason: 550 5.1.1 User unknown) ----- Transcript of session follows ----- 550 5.1.1 <james...@singnet.com.sg>... User unknown Thanks in Advance, -Motty