Dear all,
I would like to filter, or at least just store, any outgoing mail message, not at a client level, but eventually at a lower level.
For instance, it would be enough to instruct postfix some way so that it stores outgoing messages permanently somewhere before sendind them. They usually stay for a while in /var/spool/mqueue, but when they are actually send are removed from there.
I don't want to rely on the client, because I could change it sometime (and I actually did it many times). I rather prefer a "system" solution. Clearly, a per-user solution would be better in order to prevent users to look at each other's mail, just like it happens with /var/spool/mail/<user>.
Many thanks in advance.
On Fri, 2004-09-03 at 00:27, Andrea Giuliano wrote:
Dear all,
I would like to filter, or at least just store, any outgoing mail message, not at a client level, but eventually at a lower level.
For instance, it would be enough to instruct postfix some way so that it stores outgoing messages permanently somewhere before sendind them. They usually stay for a while in /var/spool/mqueue, but when they are actually send are removed from there.
I don't want to rely on the client, because I could change it sometime (and I actually did it many times). I rather prefer a "system" solution. Clearly, a per-user solution would be better in order to prevent users to look at each other's mail, just like it happens with /var/spool/mail/<user>.
Consider installing an IMAP server, holding all your mail. Create a directory "Sent" there and instruct your client to store a copy of sent mail in that folder. Any (IMAP compliant) client you might use in the future will then be able to see that folder.
Am Do, den 02.09.2004 schrieb Andrea Giuliano um 18:27:
I would like to filter, or at least just store, any outgoing mail message, not at a client level, but eventually at a lower level.
For instance, it would be enough to instruct postfix some way so that it stores outgoing messages permanently somewhere before sendind them. They usually stay for a while in /var/spool/mqueue, but when they are actually send are removed from there.
Andrea Giuliano, Ph. D.
http://www.postfix.org/postconf.5.html#always_bcc
Alexander
On Thu, 2004-09-02 at 12:27, Andrea Giuliano wrote:
Dear all,
I would like to filter, or at least just store, any outgoing mail message, not at a client level, but eventually at a lower level.
For instance, it would be enough to instruct postfix some way so that it stores outgoing messages permanently somewhere before sendind them. They usually stay for a while in /var/spool/mqueue, but when they are actually send are removed from there.
I don't want to rely on the client, because I could change it sometime (and I actually did it many times). I rather prefer a "system" solution. Clearly, a per-user solution would be better in order to prevent users to look at each other's mail, just like it happens with /var/spool/mail/<user>.
Many thanks in advance.
I had to implement something similar recently. In my case I am using sendmail. The solution I used was milter-bcc.
http://www.milter.info/milter-bcc/index.shtml
This allows you to save messages from specific users. Done at the system level using the access file. Worked well for my site.
"Scot L. Harris" webid@cfl.rr.com writes:
I don't want to rely on the client, because I could change it sometime (and I actually did it many times). I rather prefer a "system" solution. Clearly, a per-user solution would be better in order to prevent users to look at each other's mail, just like it happens with /var/spool/mail/<user>.
Many thanks in advance.
I had to implement something similar recently. In my case I am using sendmail. The solution I used was milter-bcc.
Another milter that will copy all outgoing and incoming is Synonym. http://www.modulo.ro/synonym/
On Thu, Sep 02, 2004 at 06:27:49PM +0200, Andrea Giuliano wrote: ....
I would like to filter, or at least just store, any outgoing mail message, not at a client level, but eventually at a lower level.
For instance, it would be enough to instruct postfix some way so that it stores outgoing messages permanently somewhere before sendind them. They usually stay for a while in /var/spool/mqueue, but when they are actually send are removed from there.
I don't want to rely on the client, because I could change it sometime (and I actually did it many times). I rather prefer a "system" solution. Clearly, a per-user solution would be better in order to prevent users to look at each other's mail, just like it happens with /var/spool/mail/<user>.
Is this a single box or is this a network with multiple boxes.
Bottom line, what you are asking is possibly hard if you cannot force all mail to flow through a central tool.
i.e. if a user can telnet to port 25 (and 465/tcp ) someplace on the net you cannot begin to impose (with an iron hand) a system solution. This will require a firewall and mail relay/gateway solution.
Since sendmail can be instructed to use ports other than the standard ones if there is a 'serious requirement' for this then more interesting solutions need to be managed.
Many clients are capable of making a direct connection for outgoing mail and fall back to localhost:25 where you can define your smart archiving host. i.e. The existence of clients that can bypass your MTA can require you to manage a firewall.
One value in this is that many worms and viruses contain their own smtp (simple mail transport protocol) engine. Blocking port 25 connections can keep any infected hosts from being bad actors.
Others have posted solutions with more modest scope. Start there....
The good news is that postfix has common configuration tools like this to help:
sender_bcc_maps: Optional BCC (blind carbon-copy) address lookup tables, indexed by sender address. The BCC address (multiple results are not supported) is added when mail enters from outside of Postfix.
Note with caution that a BCC failure will bounce back to the sender so this is not a 'stealth' trick in the presence of an error.
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Alexander Dalloz -
Andrea Giuliano -
HaJo Schatz -
Harry Putnam -
Scot L. Harris -
Tom Mitchell