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Pro / dkim-exchange

DKIM Signing Agent for Microsoft Exchange Server
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Out of office mails in Exchange 2010 (which are ms-tnef), are not signed #260

Open gestature opened 5 years ago

gestature commented 5 years ago

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Description

I set up the DKIM protocole, with DKIM Exchange, to solve the problem of Out Of Office Mails not beeing allowed by external mail servers because of the empty ReturnPath field.

Unfortunatly, DKIM Exchange don't want to sign thos OOO mails, it says : "Message is a System message or of TNEF format. Not signing.".

OOO mails from our Exchange Server are ms-tnef :

Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: binary

Expected behavior: out of office mails, which are ms-tnef, could be signed

Actual behavior: out of office mails, which are ms-tnef, are not signed.

I'm wondering if anyone has a solution for this problem?

Thank you in advance

sarthurdev commented 5 years ago

You could try disabling the TNEF format on remote messages as stated in the Readme: https://github.com/Pro/dkim-exchange/blob/master/README.md#configuring-the-agent

gestature commented 5 years ago

You could try disabling the TNEF format on remote messages as stated in the Readme: https://github.com/Pro/dkim-exchange/blob/master/README.md#configuring-the-agent

I already configured this but it applies only to "normal" mail. Out of office mails are "system" mails and I can't figure out how to "not send them in TNEF format".

But thank you for you answer. This problem seams to have no solution but in fact nearly noone has this problem so there must be a simple solution. :D

J0HAN85 commented 4 years ago

But thank you for you answer. This problem seams to have no solution but in fact nearly noone has this problem so there must be a simple solution. :D

Well I do... And I haven't found a solution as well.