Hi all,
from time to time i get SPAM with Content-Type with extra
type= argument, eg.:
Content-Type: multipart/related; type="multipart/alternative"; ...
I spend a lot of time to find where that type= argument is
defined. I guess, that they try do define which nested part
is "main".
I created rule for that in rspamd some months ago and i was
happy, until i received legitime message with the same in C-T
(and was delivered to Junk folder). It was only one legitime
message yet...
By what i understand from RFCs, that header is syntacticaly
valid. I didn't found that it is exactly mentioned somewhere,
but search Internet for "type & MIME" is problematic, as search
mostly retuns MIME type/subtype or unrelated results :-)
Please:
+ is that "type=" argument standardized somewhere?
+ is it generated by some (known) software and thus have i
consider it as common, that cannot be used as SPAM marker?
+ is my guess about "main" part right?
Thanks
--
Slavko
https://www.slavino.sk/
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