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7/29/25
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Comment on [#14656] Corupted mail while reply/forward when original mail has s/mime signed and in html format
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> Hello, > > if you receive mail that is s/mime signed and in html format and you > try to reply or forward it in html format, its content is corrupted > (see attached screenshot - in the red rectangle). > > The original mail has to be s/mime signed and in html format. The > signed mail is commonly cresated in Thunderbird or MS Outlook. When > it is signed and in plaintext or it is unsigned and in html Imp works > fine. Also when you uncheck the "compose in html" checkbox all is > working fine. > > I believe it could be problem in parsing of multipart message. Part > of headers of original mail follows > > ... > Content-Type: multipart/signed; protocol="application/pkcs7-signature"; > micalg=sha-256; boundary="------------ms070302060509050603000208" > > This is a cryptographically signed message in MIME format. > > --------------ms070302060509050603000208 > Content-Type: multipart/alternative; > boundary="------------BCBB714262F81EB40298387E" > Content-Language: Cestina > > This is a multi-part message in MIME format. > --------------BCBB714262F81EB40298387E > Content-Type: text/plain; charset=iso-8859-2; format=flowed > Content-Transfer-Encoding: quoted-printable > > plaintext text > > > --------------BCBB714262F81EB40298387E > Content-Type: text/html; charset=iso-8859-2 > Content-Transfer-Encoding: quoted-printable > > <html> > html text > </html> > > --------------BCBB714262F81EB40298387E-- > > --------------ms070302060509050603000208 > Content-Type: application/pkcs7-signature; name="smime.p7s" > Content-Transfer-Encoding: base64 > Content-Disposition: attachment; filename="smime.p7s" > Content-Description: Elektronicky podpis S/MIME > > MIAGCSqGSIb3DQEHAqC.... > ... > > The corrupted characters are utf-8 representation of smime.p7s bytes. >
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