plaintext create then dkim=pass, but html create dkim=fail

[userivan777]

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Hi all. Sending problem: sogo. If plaintext create then dkim=pass, but html create dkim=fail. Please help

Mail 1 DKIM = PASS
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by myt5-4fdc2b48514c.qloud-c.yandex.net (mxfront/Yandex) with ESMTPS id x0YtQx5SdmI1-dDooBed5;
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X-Yandex-Fwd: 1
Authentication-Results: myt5-4fdc2b48514c.qloud-c.yandex.net; spf=pass (myt5-4fdc2b48514c.qloud-c.yandex.net: domain of mechta.com.kz designates 87.247.24.194 as permitted sender, rule=[a]) smtp.mail=[e-mail]; dkim=pass header.i=@mechta.com.kz
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by mail.mechta.com.kz (Postfix) with ESMTP id 4PCjlb3LMGzDyhc
for [e-mail]; Fri, 10 Feb 2023 12:00:59 +0600 (+06)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mechta.com.kz; h=
content-type:message-id:subject:date:mime-version:user-agent:to
:from; s=dkim; t=1676008859; x=1678600860; bh=g3zLYH4xKxcPrHOD18
z9YfpQcnk/GaJedfustWU5uGs=; b=bozWYgq8RfAfQxH57Qjnao78Y4cybjd3rg
eCWiJhlU4vcUMKKGpH6O/ZtPZHpfq63KqK++IzGU22f55Du0q9hKT2QrM6WjSPoX
YPg4Fg139y4ZbP4ZoM5zmxHuNAaJwjkeVdNUfwDCdjEM/3HpvchPaikbCNNcXU/4
IpSBJEwnM=
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with ESMTP id UYhREUudpSND for [e-mail];
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for [e-mail]; Fri, 10 Feb 2023 12:00:58 +0600 (+06)
From: =?utf-8?q?=D0=93=D0=B0=D1=84=D0=BD=D0=B5=D1=80_=D0=98=D0=B2=D0=B0=D0=BD?= [e-mail]
To: [e-mail]
User-Agent: SOGoMail 5.8.0
MIME-Version: 1.0
Date: Fri, 10 Feb 2023 01:00:58 -0500
Subject: test
Message-ID: 51d-63e5dd80-7-6af3a700@139032621
X-Forward: 192.168.7.27
Content-Type: text/plain; charset="utf-8"
X-WatchGuard-Spam-ID: v=2.4 cv=cqv4L30i c=1 sm=1 tr=0 ts=63e5dd9d a=cVeiCYKGTkQfA0NuNc28FQ==:117 a=IkcTkHD0fZMA:10 a=m04uMKEZRckA:10 a=M51BFTxLslgA:10 a=g3hvaGhtCrT-tANkLE0A:9 a=QEXdDO2ut3YA:10
X-WatchGuard-Spam-Score: clean
X-WatchGuard-Mail-Client-IP: 10.41.41.12
X-WatchGuard-Mail-From: [e-mail]
X-WatchGuard-Mail-Recipients: [e-mail]
X-WatchGuard-AntiVirus: part scanned. clean action=allow
Return-Path: [e-mail]
X-Yandex-Forward: 23a49e26124f856c3bdbf843349c22ca

test

MAIL 2 DKIM=FAIL
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Received: from mail.mechta.com.kz (unknown [87.247.24.194])
by iva8-952b09667b17.qloud-c.yandex.net (mxfront/Yandex) with ESMTPS id g1YJZn5Sj4Y1-RBKM0mL6;
Fri, 10 Feb 2023 09:01:42 +0300
X-Yandex-Fwd: 1
Authentication-Results: iva8-952b09667b17.qloud-c.yandex.net; spf=pass (iva8-952b09667b17.qloud-c.yandex.net: domain of mechta.com.kz designates 87.247.24.194 as permitted sender, rule=[a]) smtp.mail=[e-mail]; dkim=fail header.i=@mechta.com.kz
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for [e-mail]; Fri, 10 Feb 2023 12:01:41 +0600 (+06)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mechta.com.kz; h=
content-type:message-id:subject:date:mime-version:user-agent:to
:from; s=dkim; t=1676008901; x=1678600902; bh=+d/TO+o+wJrAFmM/Pd
91oybxoEwsz1Bu7Z/5SlDizZY=; b=fWKFalTpJWekL/ovRIpVRbmXCwdam0Dd1g
K//wW8MZsMBa7B6jYA7Rgqem1uYEbEIOD3+OyX0tI4Xdqyw5utbgzwMRuxDaeFpC
melXRMHP2KxkCGBaKA5Ylsy0UPkmo4EjPzx5c4hZD4qDlnTZWGu+n2OPEyUf50Zz
ppPpCV3yQ=
X-Virus-Scanned: Debian amavisd-new at mail.mechta.com.kz
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with ESMTP id JkknSioIEFdg for [e-mail];
Fri, 10 Feb 2023 12:01:41 +0600 (+06)
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From: =?utf-8?q?=D0=93=D0=B0=D1=84=D0=BD=D0=B5=D1=80_=D0=98=D0=B2=D0=B0=D0=BD?= [e-mail]
To: [e-mail]
User-Agent: SOGoMail 5.8.0
MIME-Version: 1.0
Date: Fri, 10 Feb 2023 01:01:41 -0500
Subject: test
Message-ID: 51f-63e5de00-17-47409e00@137617151
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Content-Type: multipart/alternative; boundary="----=_=-_OpenGroupware_org_NGMime-1311-1676008901.645548-3------"
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X-WatchGuard-Mail-Client-IP: 10.41.41.12
X-WatchGuard-Mail-From: [e-mail]
X-WatchGuard-Mail-Recipients: [e-mail]
Return-Path: [e-mail]
X-Yandex-Forward: 23a49e26124f856c3bdbf843349c22ca

------=_=-_OpenGroupware_org_NGMime-1311-1676008901.645548-3------
Content-Type: text/plain; charset=utf-8
Content-Length: 5
X-WatchGuard-AntiVirus: part scanned. clean action=allow

test

------=_=-_OpenGroupware_org_NGMime-1311-1676008901.645548-3------
Content-Type: text/html; charset=utf-8
Content-Length: 17
X-WatchGuard-AntiVirus: part scanned. clean action=allow

test

------=_=-_OpenGroupware_org_NGMime-1311-1676008901.645548-3--------