Unable to attach a file in EML format

HCL Leap Leap Forum
1

Leap Version: 1.1.8.0_25
Leap Deployment: Domino Leap
Operating System: Win 64bit

I need to create a file attachment in a Leap page using an EML file. When I try it everything seems to work fine but the attachment isn’t really stored in the form : when I try to download it I got the prompt “RFC-822 data” (correct) and size = 1 byte which is obviously wrong .
Already tried to modify the Leap config using attachmentFilesWhiteList with eml file extension and message/rfc822 as mime-type but without success.

Also, opening the leap application from the Notes client I noticed that the document for the attachment has been created but the field where the attachment should be stored is empty.

Thanks for the cooperation
Fabio

2

Hello,

If you check in the Network tab of your browser, is the data correctly pushed? Or is there any response header that may indicate an error?

Which version of Domino Leap are you using?

Thx,

Guillaume

3

Hello,

I ran some test and I’ve experienced the same problem on different environments with different versions of Domino Leap:
1.1.4.0_21
1.1.8.0_25
1.1.10.0_14

About the network tab : I don’t see any error response :
HTTP/1.1 201 Created
Server: Lotus-Domino
Date: Tue, 24 Mar 2026 08:46:43 GMT
Connection: close

I also tried a different test : I tried to attach the eml file (and got the problem) then I renamed the file form .eml to .txt and in this way I was able to attach the file correctly.

4

Based on the description, it sounds like the attachmentFilesWhiteList is not configured or enabled properly. If set correctly, then you should be able to add an .eml file as an attachment.

5

No, i forgot to mention this in my first post but I’ve alredy checked this.

The attachmentFilesWhiteList setting is already enabled with these values:

png gif bmp eml jpg webp txt pdf eml doc docx ppt pptx xls xlsx csv tsv log

As by documentation I’ve also tried to add values like message/rfc822 (and some variants) but without success.

Thanks

Fabio

6

Hello,

After a while, I came back to this issue which is still present.

I want to add a couple of things :

the .eml extension is in white list , Leap allows to load the file: if I try to add a not-allowed file I get the correct message

immagine

As the .eml has been uploaded and the form saved this is what I get tryng to download it:

immagine

pls, note the size of the file (1 bytes)

Checking the attachment document from the Notes client I see no file is attached : the document is in database without any attachment.

Any idea ? Thanks, Fabio