XCLN: Adobe Acrobat PDFs Encoded in Different Formats

• Microsoft Outlook for Windows 3.x, Exchange Server Edition, version 8.0
• Microsoft Exchange Windows NT client, versions 4.0, 5.0
• Microsoft Exchange Windows 95/98 client, versions 4.0, 5.0
• Microsoft Outlook Windows 95/98 client, versions 8.00, 8.01, 8.02, 8.03
• Microsoft Outlook Windows NT client, versions 8.00, 8.01, 8.02, 8.03

SYMPTOMS

When you send an Adobe version 1.2 Portable Document Format (PDF) file (created by Adobe 3.0 Writer) as an attachment with an Exchange client, the attachment is encoded as "quoted printable." However, a version 1.1 PDF file will get encoded as "base64."

PDF files (Adobe Portable Document Format) are the format in which documents are saved for viewing and transfer by Acrobat Reader and Acrobat Exchange for Macintosh and Windows. The encoding from the Microsoft Exchange client is determined based on the first 4 KB content of the attachment. Adobe changed the format between versions 1.1 and 1.2 PDF files. The 1.1 PDF version is based on Base64 encoding; the version 1.2 PDF is based on quoted printable encoding.

If the receiving system is not capable of understanding the "quoted printable" encoding, it may cause problems.

WORKAROUND

If the customer system is incapable of handling "quoted printable" encoding, use only version 1.1 PDF files. Another possible solution is to compress the files before sending them with a third-party compression utility such as Winzip.

For additional information about workarounds, please see the following article in the Microsoft Knowledge Base:

Q182307 XADM: Text Attachments Appear Corrupted

STATUS

Additional query words: XCLN Adobe PDF Attachments

Keywords :
Version : WINDOWS:4.0,5.0,8.0,8.00,8.01,8.02,8.03
Platform : WINDOWS
Issue type : kbbug