smime webapp kopano

marnoeBT

I have the same problem
send via webapp or deskapp works, but the receiver gets the indication that the mail could be manipulated.

via ios it works perfectly and signed correctly.

only clue when sending via web / deskapp is the e-mail header, here are 2 entries for Mime version

##########

X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: “MIME-Version”
Subject: TEST
From: " anonymisiert " anonym@anonym.de
To: “anonym@gmail.com” anonym@gmail.com
Date: Fri, 28 Dec 2018 13:13:27 +0000
Mime-Version: 1.0
X-Priority: 3 (Normal)
Message-Id: kcis.ID@anonym
MIME-Version: 1.0
Content-Type: multipart/signed; protocol=“application/x-pkcs7-signature”; micalg=“sha-256”; boundary="----88A2CFE0C5AF6C2296458FD5099A2592"

------88A2CFE0C5AF6C2296458FD5099A2592
Subject: TEST
From: " anonymisiert " anonym@anonym.de
To: “anonym@gmail.com” anonym@gmail.com
Date: Fri, 28 Dec 2018 13:13:26 +0000
Mime-Version: 1.0
Content-Type: multipart/alternative;
boundary="=_S5y9yi0RKu2v32h4RxMkjB3kCwTUbrgVJBf8rcSRt6UGHFCO"
X-Priority: 3 (Normal)
Message-Id: <kcis.ID.anonym.de>

########

specifications:
debian9
php-kopano-smime 1.0.00+14.3
kopano-webapp 3.5.1.2067+1139.1
kopano-server 8.7.80.355.acad8ae1e-0+26.1

any ideas or workarounds?