Spam blocker blocked mail custom message

nlopez · 07-10-2009, 06:34 AM

Hi guys,

What error message do senders receive when email is block by spam blocker?
I would like to enable tarpitting to do DNSBL with Zen. I want to know if there is a way to customize the error message.

Update:
I sent a test spam from Gmail to my work email and spam blocker caught it; however, I did not get any error message from it. It seems that this is not possible. This is very risky because legitimate users might get block without any notice.
I think I will let the Exchange server handle the DNSBL as I am able to create a custom message there.

juank · 10-13-2009, 06:57 PM

Sending a NDR or a SPAM notification message to senders is NOT a good idea for several reasons:

1. That's a method used by spammers to find valid addresses.
2. Let's say a spamer fakes the MAILFROM field in the SMTP message and send millions of spam messages with your email address in the from field?
3. a lot more reasons.

07-10-2009, 06:34 AM	#1 (permalink)
nlopez Untanglit Join Date: Jul 2009 Posts: 13	Spam blocker blocked mail custom message Hi guys, What error message do senders receive when email is block by spam blocker? I would like to enable tarpitting to do DNSBL with Zen. I want to know if there is a way to customize the error message. Update: I sent a test spam from Gmail to my work email and spam blocker caught it; however, I did not get any error message from it. It seems that this is not possible. This is very risky because legitimate users might get block without any notice. I think I will let the Exchange server handle the DNSBL as I am able to create a custom message there. Last edited by nlopez; 07-11-2009 at 08:17 AM..

10-13-2009, 06:57 PM	#2 (permalink)
juank Join Date: Aug 2007 Location: Athens URLs submitted: 40 Posts: 1,408	Sending a NDR or a SPAM notification message to senders is NOT a good idea for several reasons: 1. That's a method used by spammers to find valid addresses. 2. Let's say a spamer fakes the MAILFROM field in the SMTP message and send millions of spam messages with your email address in the from field? 3. a lot more reasons. __________________ -------------------------------- Juan Machado -------------------------------- PLEASE Help me voting on this Feature Request : Quota based web usage for users http://bugzilla.untangle.com/show_bug.cgi?id=3475