Marco Gaiarin via Exim-users wrote on 13.09.2018 18:45:
> Mandi! Lena--- via Exim-users
> In chel di` si favelave...
>
>> No way I think. I'm curious: how often did you see messages triggering
>> this rejection?
>
> Oh, probably never... but indeed seems good to reject messages with a
> defective MIME structure...
>
>
>> More elaborate checks:
>
> Thanks for the hint. Very interesting recipe... but still the question
> remain.
Try to use $mime_anomaly_level and $mime_anomaly_text
> My current mime ACL is:
>
> acl_smtp_mime:
>
> # Decode MIME parts to disk.
> warn
> decode = default
>
> # Unpack MIME containers and reject file extensions used by worms.
> .ifdef LOCAL_FORBIDDEN_EXTENSIONS
> deny
> message = '$mime_filename' files are not accepted here
> !acl = acl_local_deny_exceptions
> condition = ${if match {${uc:$mime_filename}}{[.] *(LOCAL_FORBIDDEN_EXTENSIONS)\$}}
> .endif
>
> # accept otherwise
> accept
>
>
> So probably the first instance can be simply converted to:
>
> # Decode MIME parts to disk. Deny on errors.
> deny
> message = Serious MIME defect detected
> decode = default
>
> but i suppose it, and also i'm asking if there's some 'status' on decode
> error, as '$demime_reason' was.
>
> Thanks.
>
--
Best wishes
Victor Ustugov mailto:victor@corvax.kiev.ua
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