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[Alex Neuman van der Hans]

Roger Jochem wrote:
> When this error occurs, I can se in my maillog messages like:
>
> MailScanner[9596]: Failed to link message body between queues 
> (/var/spool/mqueue/dfi8R9KQqf010458 --> 
> /var/spool/mqueue.in/dfi8R9KQqf010458)
>
I've had the exact same problem before, and since then I rarely leave 
"max children =" set to more than 1 unless the server is quite busy. 
Call me crazy but since MailScanner is so darn fast I would ask myself 
if the slowness is related to lack of RAM or some other factor. There's 
that, and there's also the fact that you can tell MailScanner not to use 
SpamAssassin for messages larger than a certain size.

After googling around myself I found a guy having the same problem 
because he was running a separate sendmail service which was getting 
confused. Try stopping MailScanner, waiting a few seconds, and using "ps 
-ax | grep sendmail" to see if there are any more instances running. If 
there are, kill them and start MailScanner again.