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Issue when loading an EML file that contains an embedded message attachment

We are having an issue with Aspose 18.9 and 18.4 when loading an EML file that contains an embedded message attachment and which I save back to disk. See details in pdf attachment.

IssueAttachments.zip (13.3 KB)


The following encoding mechanisms are defined under RFC1521:

encoding := "Content-Transfer-Encoding" ":" mechanism

mechanism :=     "7bit"  ;  case-insensitive
                  / "quoted-printable"
                  / "base64"
                  / "8bit"
                  / "binary"
                  / x-token 

Please follow the RFC link below for more details:

We hope that this answered your question. Please feel free to write us if any additional information is required in this regard.

The reference you gave us is about the Content-Transfer-Encoding in general. However, when the content-type is message/rfc822, base64 is not permitted (as far as we understand the information in RFC1341).


Here is the relevant sentence:

As stated in the definition of the Content-Transfer-Encoding field, no encoding other than "7bit", "8bit", or "binary" is permitted for messages or parts of type "message".


Thank you for writing back to us.
We have logged this issue under ID “EMAILNET-39126” for further investigation. You will automatically be informed here once we have more information to share.

The issues you have found earlier (filed as EMAILNET-39126) have been fixed in this update. This message was posted using BugNotificationTool from Downloads module by MuzammilKhan