Re: Calmail Marking Mailing List Email as Spam

Hi Alan,

In the message "[Webnet] Calmail Marking Mailing List Email as Spam",
dated 2004-12-10, Alan Hogue wrote:

>We send out occasional emails to people on relatively small mailing
>lists. We use majordomo lists from lists.berkeley.edu. I've just
>been informed that a recent email sent to the list was marked as
>spam by Calmail.
>
>I haven't been able to find any information about what rules the
>Calmail filtering system uses, so I do not now how to get around
>this problem. Has anyone had a similar problem? Any ideas? It
>appears that Sophos (the filtering software apparently used by the
>campus) does not appear to publish details about how their filter
>works.
>
>Note that this was definitely Calmail, and not the user's client,
>since it showed up with the [SPAM:XXXXXXXX] prefix attached to the
>subject line.

   Contacting CalMail consulting is likely the best place to obtain a
definitive answer.

   However, in the meantime, the quickest way to find out why a
message was highly scored as probable spam is to look at the full
headers of the message in question.

   In the headers will be an x-header, "X-Ucb-Spam", such as this example:

X-Ucb-Spam: Gauge=XXXXXXXXXIIII, Probability=94%,
Report="INVALID_MSGID, KNOWN_ADVERT_DOMAIN, MIME_HTML_ONLY_MULTI,
__CT, __CTYPE_HAS_BOUNDARY, __CTYPE_MULTIPART, __CTYPE_MULTIPART_ALT,
__HAS_MSGID, __MIME_HTML, __MIME_HTML_ONLY, __MIME_VERSION,
__TAG_EXISTS_HTML, __TO_MALFORMED_2"

   The spam rules which this message triggered are briefly listed in
the x-header, along with any informational-only rules (which begin
with "__") that also were triggered.

   You can then copy this x-header and paste it into the box on:

   http://socrates.berkeley.edu/cgi-bin/x-ucb-spam.cgi

to see even more detailed information about why a message was scored
highly as probable spam.

   For more information - albeit possibly somewhat dated - on spam
processing on CalMail and Socrates, see:

   http://mailinfo.berkeley.edu/

Aron Roberts
Workstation Software Support Group
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Received on Fri Dec 10 13:25:05 2004