Hello fellow RT users,

We recently installed the CommandByMail perl module, and our developers were 
happy, as it would cut down on their workflow time (rather than going to the 
web tool).

However, a little over a day later, we suddenly got hit with what ended up 
being over 100k emails - which seemed to be bounces sent by our RT box to our 
mailing lists box, to our main mail server box, then back over to our RT box, 
which should have stopped forwarding the bounce mail, but it instead kept on 
going and we ended up with all these bounce emails:

<snip>
----- Forwarded Message ----- 
From: [EMAIL PROTECTED] 
To: [EMAIL PROTECTED] 
Sent: Friday, April 11, 2008 1:38:36 PM (GMT-0800) America/Los_Angeles 
Subject: RT Bounce: RT Bounce: RT Bounce: RT Bounce: RT Bounce: RT Bounce: RT 
Bounce: RT Bounce: RT Bounce: [req2  #145481] RT  Bounce: RT  Bounce:  RT  
Bounce:  RT  Bounce: RT Bounce: [req2  #145481] RT  Bounce: RT   Bounce: RT  
Bounce: RT  Bounce: RT Bounce: RT   Bounce: RT   Bounce: [req2 #145481]     
AutoReply:  RE:   April 79%  OFF 

RT thinks this message may be a bounce 
</snip>

I read on a blog that had some info on how to configure the CommandByMail (on 
cpan the install instructions were actually a broken link), a comment in 
passing about people being able to spoof emails once the CommandByMail is used; 
not sure if that might be related, but we ultimately think that we may have 
been getting mail bomb attempts, which didn't come to light until we installed 
this module and it allowed those through.

Or perhaps something else is going on? Anyone encountered something similar, or 
have an idea? I tried several searches on Google but came up snake eyes.

Currently we have mitigated the problem by REJECT'ing from the bounced senders 
([EMAIL PROTECTED], and <>), and also backing out the pm.

Thanks in advance everyone.
maurice




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Maurice Chung
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