We are experiencing very odd attachment mangles and flat-out drops on the receiver's end. The attachment leaves here >From Outlook, travels through a RaQ3i or RaQ4r and doesn't arrive at the other end. Just the body arrives.
| |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. | |_______________________________________________ |cobalt-security mailing list |[EMAIL PROTECTED] |http://list.cobalt.com/mailman/listinfo/cobalt-|security | | _______________________________________________ cobalt-security mailing list [EMAIL PROTECTED] http://list.cobalt.com/mailman/listinfo/cobalt-security
