Open source releases 2022

Profile picture for user service

Hi all,

new community versions for 2022 have been released. These are AS2, OFTP2 and AS4. Please refer to

for release notes.

The download links could be found at

Your mendelson dev team



With the latest version of AS2 when we enable only signing, the following header contains a '\t' character (tab) after micalg=512; and before boundary.

    Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha512; boundary="----=_Part_40_9314382.1648126586877"

Is there anyway we can report this and get it fixed?

Profile picture for user service

In reply to by vishnuk15


we are not adding whitespaces there directly, this is done by the underlaying mail API once additional mail parts are added the the MIME structure. Means that should be ok? If there is a change to an older version the reason might be that we updated the mail API.


In reply to by service

Thank you for the clarification.
Since it is added by the underlying mail API, could you unfold the headers? Is there any possibility to remove the invalid characters (like '\t', '\n', '\r') before sending the outbound message? This will be helpful in our case where the underlying spring framework is not allowing us modify it as it fails while reading it in the first place javax.servlet.http.HttpServletRequest.getHeader("Content-Type").