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[ANN] filter for text-only base64-encoded msgs [LINUX][FOSS]
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Dario Niedermann
Sep 30, 2019, 5:57:22 AM9/30/19
to
Sometimes you'll get an email - without attachments, just text - and
that email is base64-encoded for no good reason. Spammers have been
known to do that in order to bypass spam filters. Mailing list soft-
ware has been unwisely configured to send out encoded messages. Or
clueless users tweaked their client the wrong way...
The end results:
1. any rule in your mail processing chain matching on message body
will fail;
2. ungreppable messages end up in your stored email.
`debbie' was written to address this specific problem. [...]
See <https://www.darioniedermann.it/sw/debbie.html> for more info.
--
Dario Niedermann. Also on the Internet at:
gopher://darioniedermann.it/ <> https://www.darioniedermann.it/
that email is base64-encoded for no good reason. Spammers have been
known to do that in order to bypass spam filters. Mailing list soft-
ware has been unwisely configured to send out encoded messages. Or
clueless users tweaked their client the wrong way...
The end results:
1. any rule in your mail processing chain matching on message body
will fail;
2. ungreppable messages end up in your stored email.
`debbie' was written to address this specific problem. [...]
See <https://www.darioniedermann.it/sw/debbie.html> for more info.
--
Dario Niedermann. Also on the Internet at:
gopher://darioniedermann.it/ <> https://www.darioniedermann.it/
Dario Niedermann
Oct 4, 2019, 7:38:18 PM10/4/19
to
> Sometimes you'll get an email - without attachments, just text - and
> that email is base64-encoded for no good reason. [...] The end results:
>
> 1. any rule in your mail processing chain matching on message body
> will fail;
>
> 2. ungreppable messages end up in your stored email.
>
> `debbie' was written to address this specific problem. [...]
Version 2.0 includes the following improvements:
> 1. any rule in your mail processing chain matching on message body
> will fail;
>
> 2. ungreppable messages end up in your stored email.
>
> `debbie' was written to address this specific problem. [...]
* adds an "X-Original-Content-Transfer-Encoding:" header
to filtered messages
* bug fixes!
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