Forward emails with headers

In the case of mail-specific security incidents, there is a large amount of relevant information in the email header. In order to forward this information unaltered and completely via electronic mail, the affected email must be forwarded unchanged as an attachment. This is described in the following paragraphs for email clients widely used at KIT.

Microsoft Outlook 2016/2013/2010

Select the email to be forwarded. In the Start menu, open the More drop-down next to Forward and select Forward as attachment.

Screenshot Outlook 2016

Screenshot Outlook 2010

 

Outlook Web App (OWA)

Create a new email by clicking on (+) New.

OWA: Neue Mail

 

Drag the mail you want to forward into the text field of the new mail.

OWA: Drag & Drop

 

Mozilla Thunderbird

Select or open the email in question and select Message → Forward as ▸ Attachment from the menu.

Mozilla Thunderbird: Weiterleiten als Anhang

 

Apple Mail (macOS)

Select or open the relevant email and select Email → Forward as attachment from the menu bar.

Apple Mail (macOS): Als Anhang weiterleiten

Unfortunately, this feature is not available in Apple Mail (iPadOS) - please use another of the mail clients documented here.

 

Claws Mail

Claws Mail has the Forward as attachment function. This can be found in the menu under Message → Forward as attachment

 

or in the context menu of the email: Forward as attachment

 

or in the menu bar via Next ▸ Forward as attachment

 

Evolution

Select the email to be forwarded. Select from the menu Message → Forward → Attached

Evolution

or from the menu bar Forward Forward As Attached

Evolution

Mutt

Set the variable mime_forward to true, either in your ~/.muttrc or interactively with

set mime_forward=yes

Then forward the mail by pressing the f key if you are using the standard configuration.

Microsoft Outlook 2003/2007

Open the options dialog via Extras → Options...

Outlook 2003/2007: Optionen

 

Open the e-mail options dialog in the Settings tab by clicking the E-mail options... button.

Outlook 2003/2007: Optionen

 

Set the drop-down menu When forwarding messages to Attach original message as attachment.

Outlook 2003/2007: E-Mail-Optionen

 

Now forward the email to the desired recipient as usual using Forward.

Outlook 2003/2007: Weiterleiten

Outlook 2003/2007: Weiterleiten