shtml attachment files ?

Shawn Iverson shawniverson at summitgrid.com
Thu Jul 28 15:42:01 UTC 2022


It is happening during the mime parsing operation when the mime is split 
into text and html parts. It assigns a name msg-<id>.html to the html 
mime part.

On 7/28/22 11:21, Mark Sapiro wrote:
> On 7/28/22 05:14, mailscanner at barendse.to wrote:
>> Hi list
>>
>> I tried blocking \.htm$ and \.html$ in my filename.rules.conf before 
>> but found that this effectively blocked nearly each and every email 
>> that was coming in so I have to allow that for as long as MailScanner 
>> cannot differentiate between an attached .html file or html text in 
>> the mail itself
>
> This is curious. Most common MUAs tend to be configured to compose 
> multipart/alternative mail with text/plain and text/html alternative 
> parts, but the text/html part does not have a `name` parameter in the 
> Content-Type: header nor does it have a Content-Disposition: header at 
> all. So where is MailScanner getting a *.html filename for these parts?
>
>


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