Da Rock wrote:
On Mon, 2008-09-22 at 20:53 -0400, George Fazio wrote:
Da Rock wrote:
Howdy. This may seem simple, but I'm completely green on this: I have a
postfix server with a courier-imap client frontend using maildir's. I'm
using imap for an internal mta, but I need to setup a system which
retains copies of sent emails on the network and not on individual
workstations (which is what happens currently).
When you say courier-imap client, do you mean you're using maildrop to deliver the message to the user's maildir or that there is an end-user courier-imap client? I am only familiar with the maildrop piece of courier.
I've looked at some of the solutions (bcc and send to a psuedo account
for each user, bcc to the user and filter the incoming mail on this) but
it seems like a very roundabout way of doing things. I've read up on
Postfix, and there is support for custom filters, so:
1. what does it take to write one?
2. how does one copy email from one folder to another in maildirs? Is it
possible?

This is a classic case of over engineering. You do not want to bcc back to the user, or filter the mta, just move the outgoing messages to the sent folder. You might need bcc for the purposes of journaling all email, if you have any legal requirement (sox, hippa, etc.) that require it. But, that it another ball of wax entirely.
This idea I have should filter the outgoing mail and copy the messages
to the sent folder as well as retaining its place in the queue.

If the end-user's client is using imap and configured properly, it should do this for you. Thurderbird, the full version of Outlook (and probably Express), and many other clients support this natively - you just have to make sure the client is configured to do that. Typically, in the configuration of the client, there is something that says something like "save a copy of sent messages to <folder of choice>". I don't know what client you're using. I use Pine/Alpine, Thunderbird, and Outlook (when I have no other choice).

If the end-user's client is using pop, then you have a problem that may require a custom solution like you speak of above.
Any ideas? Maybe a link to some good info? I would like to know how to
do this myself so I can do more in the future so info and pointers would
be great (if you have a script you'd like to share then please show me
how it works :) ).

Cheers

My mail system is running postfix (mta) w/ dovecot (for imap or pop access from the clients), maildrop (for delivering to a maildir), and amavis-new (for spam filtering and virus scanning w/ clamav). My mail clients are configured for imap, and they save copies of sent mail to the sent folder as expected. While I am using dovecot, and not courier, for my imap server - I cannot imagine that any other imap server would handle things any differently ... it's core functionality that ever imap server should have imho.

-George


Me too. It may be possible to save a copy in evolution, but I haven't
found it in all clients. Plus my system needs to be suitable for a
webmail system, and yes some pop clients.

You sound like you know maildrop very well, I was considering using it
as a part of the solution. If I wrote a milter script for postfix, is it
possible to pass the message to maildrop so that it can take care of the
formalities such as filenames and formats and tell it to put it in a
sent folder? Something like a shell or perl script that uses this line
to run maildrop:

maildrop -d $user Maildir/.Sent

Obviously the message itself will be piped, and the $user will be
obtained by copying the from field in the message.

Would something like this work? I've been searching on google but
haven't found a clear answer, they only mention using maildrop filters
and commands there- not actual usage of the maildrop cli.

Cheers

If you wrote a filter for postfix, which I have no idea how to do, the maildrop command you sight looks good.

A friend of mine is using round cube for web mail (I don't have webmail setup on my server), and it will also save a copy to the sent folder. Most of the web clients should provide this functionality. The pop clients are the ones that are going to be an issue.

I'm not sure what Google is using for gmail. But, when I send a message using their smtp service, a copy goes into my account. So, what you're looking to do is obviously possible, but I do not have an experience with it as I have not had need for a solution yet. I would certainly be interested in what you come up with though.

Another possible option is to configure the clients to always bcc the sender, and then write a maildrop rule. Something like "if (/^From:[EMAIL PROTECTED]/) to Maildir/.Sent" might work (I have not tested this rule, it may not function as desired). That would have to go in the .mailfilter file in each user's home dir. I think you can have global maildrop rules if I remember correctly. You might be able to sub user for a variable that contains the user name or the message sender, or something like that, so that you do not have to modify the .mailfilter file for every user.

Good luck...

-George

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