Hi, all:
Can james work with a close mailing list to anti-spam?
Recently I am tring to use James in a speical web project, and I want to
develop some codes to make James server satisfy my requirement.
the detail are:
1) James server will act as a mailing list server, together with
Mysql.(many mailing list account, assume one is [EMAIL PROTECTED])
2) user can not subscribe one mailing list by sending email to
mailing-list-email-address, the only way to subscribe is login a related web
site,
and click some button. and the website will add this user (with a valid
internet email address) to Mysql database.
3)When any one send email to any mailing list account, such as [EMAIL
PROTECTED], before receive the whole email, I want to check the email header,
if the email-sender is not in the allow list, I want the server to reject the
email.( send a feed back notice, or simply just drop this email), and not
receive the whole email. In my bisiness logic, any email address that not in
the allow list is a spam email, and the allow list will be cached in the memory
so don't need to consider the allow-list-efficency.
4) when any one send a big email to any mailing list account, before
receive the whole email, I want to check the email size, if it is bigger than
what I want, I want the server to send a feedback notice "too big email", and
not receive the whole email. (to save bandwidth).
Is it possible to update James server to satisfy above requirement?
if it is possible, which part of James-server can I begin with?
I know we can add a custom Mailet in the James server, but when the mailet is
executed, although I can do above logic(like drop spam email), but it is a
little late, because whole email already received by James and the bandwidth
has been wasted.
Why I need such strange requirement is because:
In my project, there are many mailing list account, and each mailing
list's traffic will be high, so I need to refuse all the unknown email address
and too-big email to save bandwidth.
I hope any one can give me help or any ideas.
Thank you very much.
tingxuezheemail-zhuce
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