[EMAIL PROTECTED] schrieb:
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
Hi,
im not sure about 1 and 2 ( im never tried the ML features) but 3,4 are
possible. Like you said you can just create a costum mailet.
3) If you want to check it on the SMTP-level ( to safe bandwith etc.)
you could extend the org.apache.james.smtpserver.DataCmdHandler and use
a costum InputStream to parse the header as soon as possible.
4) I think this is allready possible by setting the mxmessage size in
the smtpserver config. If you need something special i whould look in
the org.apache.james.smtpserver.DataCmdHandler and the
org.apache.james.smtpserver.SizeLimitedInputStream
If its possible for you to receive it completly you could use a
implementation of org.apache.james.smtpserver.MessageHandler and plug in
this one in thesmtphandlerchain.
bye
Norman
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