[no subject]

|
|I have a strange ?problem with attachments to emails being 
|randomly scrambled through our mail server.
|
|I have read up on this topic as much as I can and I understand 
|that Sendmail or any other MTA, for that matter,  is not 
|concerned with the contents of a mail envelope, it merely 
|accepts it for delivery. I have checked through the various 
|MIME encoding issues, ESMTP issues and looked at what the 
|MTU's are using to create the mail attachment. I have 
|eliminated most of these issues during my analysis.
|
|Here are the symptoms:
|Windoze clients sending mail using Outlook as a MTU use 
|Sendmail, running on a dedicated Raq3i, for delivery. Mail is 
|processed with no errors of any kind. Sendmail to Sendmail 
|works 10/10, Sendmail to Exchange generates these random errors. 
|
|I have read about issues where Sendmail converts some MIME 
|formats such as QP to Base64 encoding, however, this does not 
|seem to be the issue as the mail envelope arrives intact to 
|it's destination, the attachment block is recognised and 
|decoded to the correct 'filename' and yet when opened it is 
|still encoded to a Base64 or something.
|
|Is this a case of double encoding at some point in the chain 
|of delivery?
|
|It only seems to effect users on Microsoft Outlook who are 
|receiving a file from our MTA (sendmail).
|
|Should anyone have heard of this problem before I would 
|appreciate some pointers.
|
|Many thanks.
|
|./Declan
|
|Apologises for the somewhat off the point question to the 
|security list.
|
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