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Maniphest T4278

Signed mails not visible in Exchange web interface (owa)
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Description

This is likely an unsolvable problem: My signed mails are not displayed in the web interface of our Exchange server (owa).


Using PGP inline would likely work, but is not the best choice for obvious other reasons. Do you know any way to make owa show my signed mails?

Edit: The offered link from the screenshot doesn't help.

Details

Version
GPG4win 3.1.5

Revisions and Commits

rO GpgOL
rO66d0c18df541 Change S/MIME Message Class handling

Related Objects

Event Timeline

JJworx created this task.Dec 5 2018, 11:42 AM
JJworx updated the task description. (Show Details)Dec 5 2018, 11:44 AM
JJworx updated the task description. (Show Details)Dec 5 2018, 12:32 PM
aheinecke claimed this task.Dec 10 2018, 8:31 AM
aheinecke triaged this task as Normal priority.
aheinecke added a project: gpgol.
aheinecke added a subscriber: aheinecke.

I'm pretty sure I tested this in the past using the Outlook.com web interface. The mails should show with an unknown attachment (the signature). I can't think of any changes recently that would have changed it. I'll check again.

Is this S/MIME or OpenPGP? Are you both using the same Exchange server instance? It might be different if the mail was converted to MIME for transport between servers.

JJworx added a comment.Dec 10 2018, 8:34 AM

Hi, it's OpenPGP and the same Exchange server. Perhaps it has to do with
the "Unterhaltungsmodus" from the error message.

 

Am 10.12.2018 um 08:31 schrieb aheinecke (Andre Heinecke):

aheinecke claimed this task.
aheinecke triaged this task as "Normal" priority.
aheinecke added a project: gpgol.
aheinecke added a comment.

I'm pretty sure I tested this in the past using the Outlook.com web
interface. The mails should show with an unknown attachment (the
signature). I can't think of any changes recently that would have
changed it. I'll check again.

Is this S/MIME or OpenPGP? Are you both using the same Exchange server
instance? It might be different if the mail was converted to MIME for
transport between servers.

*TASK DETAIL*
https://dev.gnupg.org/T4278

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aheinecke raised the priority of this task from Normal to High.Jan 9 2019, 6:58 AM
aheinecke merged a task: T4300: Signed (sign-only) messages are blank when read on Android email clients / Outlook online.
aheinecke added a subscriber: markpaskal.

Should be looked at before the next release.

aheinecke added a commit: rO66d0c18df541: Change S/MIME Message Class handling.May 20 2019, 2:36 PM
JJworx added a comment.Jun 24 2019, 8:34 AM

I just received answer that this is still a problem in the current release.

JJworx added a comment.Oct 18 2019, 10:52 AM

Still unresolved...

gpatel-fr added a subscriber: gpatel-fr.Apr 4 2021, 4:57 PM

This feature does not use Outlook per se.. It's a problem with Exchange really. An Exchange Add-in would be needed to solve it, an Outlook add-in such as Gpgol can't do anything about it..

Anyway, I tested this today with Exchange 2016 CU20 and I can't reproduce it. Mail shows with signature as attachment while it appears as trusted in Outlook (the Windows software). No problem at all.