smime webapp kopano

Hi its ondead a p12 Pfx certificate. I installed iT on my iPhone and in outlook. If i send mail from these devices all is ok and trusted. Except when sending from webapp. However in webapp i installed the same certificate

Hi,

did you prepare your WebApp as described here: https://documentation.kopano.io/webapp_smime_manual/install_ca.html ?
My S/MIME in WebApp works for me as expected.
.

@walterhof

Yes i have done this. my certificate comes from comodo.

@walterhof nevermind. i tested some further and it seems that the incoming mailserver does something to the mail from the mailaccount that tels me that the mail is untrusted. if i send to other mailservers all is wel.

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?