Following from the attached email, I've been working on a solution to my redirection
problem. I think I've pretty much solved it. I've tested it for a while and it seems
to work, so here's there new Mailet which is fairly self-explanatory.
See below...
On Tuesday, November 21, 2000, at 04:34 PM, Ye Tao wrote:
> I might be wrong, but I guess James is already late
> when it receives the email. The address is set by the
> unix sendmail (as triggered by .forward), and james is
> already in the downstream.
>
>
> > I'm now trying to deal with some email which is
> > coming in having been forwarded by a Unix server
> > using the standard ".forward" facility.
> >
> > I have email coming in being sent to addresses such
> > as:
> >
> > [EMAIL PROTECTED]
> > [EMAIL PROTECTED]
> >
> > They are all being .forwarded to
> > "[EMAIL PROTECTED]"
> >
> > When JAMES receives them I would like the original
> > destination to be used for "matching", but at
> > present the "[EMAIL PROTECTED]" address is being
> > used instead.
> >
> > Is there any way round this with the current
> > version?
> >
> > If not, which bit of code should I try adapting -
> > any hints much appreciated.
/*****************************************************************************
* Copyright (C) The Apache Software Foundation. All rights reserved. *
* ------------------------------------------------------------------------- *
* This software is published under the terms of the Apache Software License *
* version 1.1, a copy of which has been included with this distribution in *
* the LICENSE file. *
*****************************************************************************/
package org.apache.james.transport.mailets;
import org.apache.james.core.*;
import org.apache.mailet.*;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
/**
* <p>Mailet designed to process the recipients from the mail headers rather
* than the recipients specified in the SMTP message header. This can be
* useful if your mail is redirected on-route by a mail server that
* substitutes a fixed recipient address for the original.</p>
*
* <p>To use this, match against the redirection address using the
* <code>RecipientIs</code> matcher and set the mailet 'class' to
* <code>UseHeaderRecipients</code>. This will cause the email to be
* re-injected into the root process with the recipient substituted
* by all the recipients in the Mail-For, To, Cc, Bcc and Newsgroup headers
* of the message.</p>
*
* <p>e.g.</p>
* <pre>
* <mailet match="RecipientIs=forwarded@myhost"
* class="UseHeaderRecipients">
* </mailet>
* </pre>
*
* @version 1.0.0, 24/11/2000
* @author Stuart Roebuck <[EMAIL PROTECTED]>
*/
public class UseHeaderRecipients extends GenericMailet {
/**
* Process an incoming email, removing the currently identified
* recipients and replacing them with the recipients indicated in
* the Mail-For, To, Cc, Bcc & Newsgroup headers of the actual
* email.
*
* @param mail incoming email
*/
public void service(Mail mail) throws MessagingException {
MimeMessage message = mail.getMessage();
// Utilise features of Set Collections such that they automatically
// ensure that no two entries are equal using the equality method
// of the element objects. MailAddress objects test equality based
// on equivalent but not necessarily visually identical addresses.
HashSet recipients = new HashSet();
recipients.addAll(getHeaderMailAddresses(message, "Mail-For"));
recipients.addAll(getHeaderMailAddresses(message, "To"));
recipients.addAll(getHeaderMailAddresses(message, "Cc"));
recipients.addAll(getHeaderMailAddresses(message, "Bcc"));
recipients.addAll(getHeaderMailAddresses(message, "Newsgroups"));
// recipients should now be a collection of all the recipients
// listed in the email headers.
log("All recipients = " + recipients.toString());
// Replace the current recipient list for the Mail object with
// the recipients derived from the message headers.
( (MailImpl) mail).setRecipients( (Collection) recipients);
log("Reprocessing mail using recipients in message headers");
// Return email to the "root" process.
getMailetContext().sendMail(mail.getSender(), mail.getRecipients(),
mail.getMessage(), "root");
mail.setState(Mail.GHOST);
}
public String getMailetInfo() {
return "UseHeaderRecipients Mailet";
}
/**
* Work through all the headers of the email with a matching name and
* extract all the mail addresses as a collection of addresses.
*
* @param mail the mail message to read
* @param name the header name as a String
* @return the collection of MailAddress objects.
*/
private Collection getHeaderMailAddresses(MimeMessage message, String name) throws
MessagingException {
log("Checking " + name + " headers");
Collection addresses = new Vector();
String[] headers = message.getHeader(name);
String addressString;
InternetAddress iAddress;
if (headers != null) {
for(int i = 0; i < headers.length; i++) {
StringTokenizer st = new StringTokenizer(headers[i], ",", false);
while (st.hasMoreTokens()) {
addressString = st.nextToken();
iAddress = new InternetAddress(addressString);
log("Address = " + iAddress.toString());
addresses.add(new MailAddress(iAddress));
}
}
}
return addresses;
}
}
Regards,
Stuart.
-------------------------------------------------------------------------
Stuart Roebuck [EMAIL PROTECTED]
Lead Developer Mac OS X, Java, XML, etc.
ADOLOS http://www.adolos.com/
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