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Replying to myself. I updated to amavisd-new 2.6.2 and the mime mail
bombs are still circulating. If they get big enough, system resources
get eaten up too now.

Florian Gleixner wrote:
> Hi,
> 
> i have a problem with some badly configured mailservers that forward
> mails by wrapping the original message in a new mail as mime part. These
> mailservers and some users with out-of-office or other mail redirections
> generate mail loops. My mailserver is a postfix with amavisd-new as
> proxy filter. I have no problem with cpu performance but with log space.
> These mails run some hundred loops until the size exceeds the maximum
> message size of one of the mailservers.
> Each time the mail hits my amavids-new, i get hundreds of lines with
> ...3/1/3/1/3/1/3/1/3/1/3/1/3/1/3/1/3/1/3/1/3/1/3/1/3/1/3/1/3/1/3/1/...
> and with
> ...0 (0%)12, decompose_part: 0 (0%)12, decompose_part: 0 (0%)12,
> decompose_part: 0 (0%)12, decompose_part: 0 (0%)12,...
> 
> Ideally i would like to block the mail or drop it. Can this be done with
> amavisd-new? What version of amavisd-new is required to be able to block
> this mail?
> 
> Thank you
> 
> Florian
> 
> 
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