Burhan Khalid wrote:
Hello Everyone:
We have the current setup running perfectly:
Exim 4.52 on RHEL 2.4.21-4.0.1 (this is a cpanel box, not sure if
this makes a difference with my question). There is also a POP3 and
IMAP server running on this box.
I don't know if cpanel is flexible enough for all this; you may need
to dive in and do manual configuration.
This computer is located in a data center in US and in addition to
Exim, runs various other services. Our main offices are Kuwait. I
would like to setup Exim on one of our local servers here such that :
1. The local Exim server holds backup of all emails sent/recieved
from the "main" server.
Purely for backup purposes? No user access needed?
Have (whatever equivalent of) users' .forward files
always specify the backup-collector account. Or
take a copy of every item by using an "unseen" router.
2. Local delivery takes places without a trip to the US over the
Internet. Internet is not very reliable in Kuwait (also is very
expensive).
Maintain a register of user "home location". Sync this to all
sites. Use it to route all mails.
90% of my users are in our local office, but I do have a few road
warriors (10) and have an average of 5 to 7 users in the field sending
and recieving messages.
Provide remote users with access via IMAP and SMTP-AUTH (on
both port 587 and 25). Don't permit non-Auth SMTP for
senders claiming to be your own people. Enforce
use of TLS (on both SMTP and IMAP) if you can; offer connect-time-SSL
SMTP on 465 if you must in order to support stupid MUA software.
Offer POP if you must, again, TLS preferred.
Embed an AV-scanning package.
Can someone please point me in the right
direction to setup a solution that solves this problem? I searched
myself, but I'm not sure if the fetchmail-to-IMAP-store solution will
help me here.
Mainly I'm concerned about the remote users (these
people travel alot). I do not want to have a large delay between the
time they send a message till the time that fetchmail kicks in and
messages are available to the local users.
Rip out the fetchmail; run as many links as possible in the "push"
mode used by SMTP as possible. Leave "pull" to the last step,
dest-MTA to MUA, to IMAP.
Also, I'm concerned with
having to make redundant trips or fall into a loop where messages are
being sent to the US server, fetched, then sent again (read about this
in a recent thread).
Keep the home-location DB up to date.
Anyone else? What have I missed?
- Jeremy
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