Steve Cox wrote:
Hi,
I'm setting up an archiving system that will store any email entering or
leaving the local network.
Any 'forward all mail' options in the existing mail servers/relays do
just that forward a copy to another mailbox - so all envelope details
are lost. I want to be able to store the emails depending on the 'from'
and 'rcpt-to' addresses in the envelope (so we catch BCCs and mailing
list recipients and such).
A simple implementation I can think of is to stick a box between the
final spam filter gateway and the rest of the LAN - relaying mail
between this gateway and the users' mail server and have this do the
archiving.
To keep the envelope data, rather than have it drop the email into
mailboxes, I was thinking of have it SMTP a second copy of each email to
another box which processes each mail coming in directly - so having
access to the envelope data. Another benefit of doing the processing on
a separate box is that there is a lot of traffic and I don't want to put
to much more processing load in the company's email stream.
So I was thinking that the easiest way to set this up would be to
configure this intermediate Exim relay with two smarthosts that forward
on each incoming email to both smarthosts at the same time. But I don't
know if this is possible?
Any thoughts on this or another method?
Many thanks,
Steve
IF everything runs through one Exim box, at least at some point,
it is easy to capture several different 'full message' archives.
We use the same tool for several such:
- an 'unseen' in each router, followed by archive-type-specific
code in the subsequent section of the 'same' router, selecting
an additional transport appropriate to the nneds for the archive.
- Some routers archive everything, others are based on headers,
(added in an acl, removable if need be) still others are based
on a 'point score' (for checking acl effectiveness / falsing, etc.)
- One can also archive to different storage types in the
successive router sections than is used in the preceding ones as
well as location (mbox, Maildir, etc.)
This should work on a 'smarthost' or relay-host, but
may also enable you to use one box instead of several.
HTH,
Bill
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