S�nke Ruempler wrote:
>[EMAIL PROTECTED] <> wrote on Friday, May 27, 2005 2:58 AM:
>
>
>
>>On Thu, 26 May 2005, John Kielkopf wrote:
>>=20
>>
>>
>>>Have a strange problem here.
>>>=20
>>>Users that have Norton Internet Security or Mcafee "Spam Killer"
>>>active have trouble with mail clogging up their systems from time to
>>>time. Disabling the products lets them receive the mail.
>>>=20
>>>Although these users complain that they never had these problems with
>>>any other mail server, this doesn't seem to be an Xmail server
>>> problem. However, I'm wondering if any of you have come up with a
>>>good solution, other than telling the users to disable these
>>>products, of filtering mail that's causing these problems, and/or
>>>what exactly it is about these messages that creates this problem.
>>>=20
>>>Here is an example of one of the messages, pulled directly from the
>>>mailbox and zipped: http://207.67.28.206/bademail.zip
>>>
>>>
>>=20
>>It's a badly formatted MIME message (there's a '\0' towards
>>the end of the
>>message). Probably this confuses the heck out of the two junk
>>software you mentioned.
>>=20
>>/me hides from MFE revenge
>>
>>
>
>Yes, Norton AntiSpam (Symantec crap ;) ) has this null-byte problem but
>they don't seem to care about it. Maybe other MTAs do filter nullbytes?
>
>
>
However, from RFC 821:
"The mail data may contain any of the 128 ASCII characters. All
characters are to be delivered to the recipient's mailbox
including format effectors and other control characters."
To me, this sounds like a null byte would fall in the "any of the 128
ASCII characters" range.
That said, I've sent sample messages and a description of the trouble to
Symantec and Mcafee long ago, and apparently there's still no fix -- so
I guess I'll need to come up with some sort of workaround. Does anyone
see any problems with filtering it?
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