I have added
^X-Mailer: (?!Microsoft Outlook .*)$
as the first rule and set to Hold according to your instructions.
I tried to block all mails except the mails from MS Outlook. However
today, I received an email with header like:
X-Mailer: Microsoft CDO for Windows 2000
I couldn't understand why this header did not go to pending moderator
requests.
On 01/30/2013 12:33 AM, Mark Sapiro wrote:
METU E-List Admin wrote:
In some of our lists, we are receiving excessive spam messages. We
analyzed the spam messages and found that they have similar headers. As
a result, we developed the following list:
^X-Mailer: (?!Microsoft Outlook .*)$
^X-mailer: .*$
This includes the one above it.
^X-Mailer-LID: .*$
^X-Mailer-RecptId: .*$
^X-Mailer-SID: .*$
^X-Mailer-Sent-By: .*$
^X-Spam-Status: Yes.*$
^X-Spam-Flag: YES
^X-Virus-Status: Yes
We don't want to receive any mails from external mail systems, only real
persons can send emails.
We enter this list to the bounce_matching_headers part (in the admin
panel, under Spam Filtering).
bounce_matching_headers doesn't work that way. See the '(Details for
bounce_matching_headers' link.
Regexps like the above should go in header_filter_rules with an
appropriate action.
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