Topic : Whats this in my mail queue?

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            Replies : 5 - Pages : 1 - Last Post : Apr 9, 2008 12:07 AM by: pterobyte
l008com


Posts: 167
From: Red Sox Nation
Registered: Jul 20, 2004
Whats this in my mail queue?
Posted: Mar 29, 2008 11:33 PM
 

My server is set up so only authenticated users can relay. In other words its NOT an open relay. Yet when I looked in my Mail Queue (in the server admin app) I see a ton of unknown emails!

http://img100.imageshack.us/img100/6321/picture1ty6.png

What are these emails? Is there a way I can view them whole? Of course my concern is that somehow I am being used as an open relay even though I'm closed. What is the deal?

Mac Pro 2.66 / 2GB / 640GB & MacBook 1.83 / 2GB / 160GB   Mac OS X (10.5.2)    
pterobyte


Posts: 5,573
From: Switzerland
Registered: May 19, 2005
Re: Whats this in my mail queue?
Posted: Mar 30, 2008 7:44 AM   in response to: l008com
 

What you are seeing is backscatter from spam which you are trying to bounce. Coming, as most spam, from unknown addresses it just sits in the queue until it expires.

  Mac OS X (10.5.2)    
l008com


Posts: 167
From: Red Sox Nation
Registered: Jul 20, 2004
Re: Whats this in my mail queue?
Posted: Mar 30, 2008 12:55 PM   in response to: pterobyte
 

Hmmmm

Does this mean spammers are able to use me to send spam, by sending spam TO fake addresses at my server, and FROM the destination address they really want to spam? That way my server will bounce the spam right to it's destination?

Mac Pro 2.66 / 2GB / 640GB & MacBook 1.83 / 2GB / 160GB   Mac OS X (10.5.2)    
pterobyte


Posts: 5,573
From: Switzerland
Registered: May 19, 2005
Re: Whats this in my mail queue?
Posted: Mar 31, 2008 12:56 AM   in response to: l008com
 

Common practice and a reason not to bounce spam. Mostly it is just backscatter to fake/inexistent senders.

  Mac OS X (10.5.2)    
David Fairbanks

Posts: 15
Registered: Oct 13, 2005
Re: Whats this in my mail queue?
Posted: Apr 8, 2008 6:55 PM   in response to: pterobyte
 

So how do you disable the bounce function?

Short of writing a shell script that gets called instead of bounce, I can't think or find a way to do it.

MacPro Quad   Mac OS X (10.4.11)    
pterobyte


Posts: 5,573
From: Switzerland
Registered: May 19, 2005
Re: Whats this in my mail queue?
Posted: Apr 9, 2008 12:07 AM   in response to: David Fairbanks
 

In amavisd.conf set final_spam_destination to D_DISCARD

Also make sure Postfix rejects as much mail as possible before it hits the content filter. See here: http://osx.topicdesk.com/content/view/38/62/

  Mac OS X (10.5.2)