Emails lost !

[eric le corre]

hello and sorry for my enlish  I Have some trouble. I Have SpamAssassin version 3.3.1, 4.83.5 mailscanner, postfix 2.8.2 on Ubuntu and MailWatch.
 This Server is configured as gateway for my Exchange 2010.

 users complain of not receiving emails. Apparently it's quite often. Users give me the address of the sender which certifies sending an email. On my exchange, I have no trace of the mail in question. On Mailscanner either, MailWatch in the mail does not appear either. In short, nothing a all. What is even more annoying is that the sender does not receive an e-mail non-delivery. So emails that are lost.

 Mailscanner in the logs I find nothing wrong.

 If someone could help me find an explanation .....

 I was wondering, but can be nothing to see there are a mailscanner script that restarts the service regularly. Are the mails could not be lost just when mailscanner restarts? possible? thanks 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.mailscanner.info/pipermail/mailscanner/attachments/20111117/e97d77ee/attachment.html