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  • From: "Silvers, Tim" <address@concealed>
  • To: "address@concealed" <address@concealed>
  • Subject: Re: [sympa-users] Sympa breaking digital signatures (SMIME) in HTML messages
  • Date: Wed, 24 May 2017 13:52:40 +0000

Hi. I simply wanted to follow up on this previous request. Has anyone else
experienced this issue? Or, better yet, can anyone else replicate it? We’re
running Sympa 6.1.11 on RHEL 6 using postfix as the MTA.

Thanks,

Tim

On 4/27/17, 4:06 PM, "Silvers, Tim" <address@concealed on
behalf of address@concealed> wrote:

Hi. Isn’t Sympa supposed to keep the digital (SMIME) signatures intact?
In our environment, it works well with plain text emails, but not for HTML
formatted messages where recipients see a warning that the original message
may have been tampered with. However, the cert used to sign the email can be
checked and it is valid.

Sympa docs confirm that headers/footers are not inserted into signed
emails, so that isn’t at fault. I tried changing some of the list’s
configuration options, as well as per subscriber delivery preferences. And I
even disabled the local spam-scanning (we use ClamAV). But, to no avail in
resolving the issue.

Any help is appreciated.

Tim

Attachment: smime.p7s
Description: S/MIME cryptographic signature



  • Re: [sympa-users] Sympa breaking digital signatures (SMIME) in HTML messages, Silvers, Tim, 05/24/2017

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