[Rspamd-Users] rspamd DKIM, Mimecast and Content-Encoding

[Vsevolod Stakhov]

On 21/10/2024 16:10, Florian Effenberger wrote:
> Hello,
> 
> Florian Effenberger wrote on 21.10.24 at 15:41:
> 
>> I now tested it with aboutmy.email and get errors on the message body 
>> signature, but only if the Content-Transfer-Encoding is 8bit. If I 
>> switch to quoted-printable, it works just fine - and I can confirm I 
>> can deliver to the Mimecast-enabled domain in this case as well.
> 
> my bad, the above information was not acurate.
> 
> Roundcube, MIME-coding for 8bit characters DISABLED, mail fails
> Roundcube, MIME-coding for 8bit characters ENABLED, mail gets through
> 
> However, that both times translates to
>    Content-Type: text/plain; charset=UTF-8; format=flowed
>    Content-Transfer-Encoding: quoted-printable
> 
> Florian

Mimecast might still not support 8bitmime, so there could be some glue 
there. WRT Rspamd changes - there was ARC signing break in 
3.10.0..3.10.1 that has been fixed in 3.10.2: 
https://github.com/rspamd/rspamd/issues/5173