On 16/02/12 10:56, Muhammad Irfan wrote:
Benson,
I am using CENTOS 5.
The only reason i am relaying emails from china (mail1.example.com SMTP) to
US host contains all user mailboxes including china& US users on (
mail.example.com). While if china users sends an email to external domains
i want those emails to send through china SMTP mail1.example.com because
most of the china users sends emails within china to external domains
through this they don't have to route to US host mail.example.com and than
it delievers back in china. I am having huge no. of complains from china
users when sending emails with attachments. Fortunately i have machine in
china DC. I installed exim on it and configured as STMP server for china
users.
I foresee sending emails from china to china host mail1.example.com will
improve email sending. Further, i will authenticate all china users via
STMP AUTH through /etc/exim/passwd file and will store china users info
there to authenticate. While for email recieving china users still need to
fetch emails from US mail.example.com. At this point i am also looking to
replicate china user mailboxes from US to china host through unix rsync
command. Don't know it's suitable or not.
I think that would be tricky. Especially with deletes - because the
delete would happen on one server, and then probably be undone. And the
'new' state of messages would be constantly clobbered.
I would think that it would be considerably easier to split the
mailboxes between the two, as has already been suggested. Cyrus with
Murder is probably the easiest way to do it. It also has the advantage
that mailboxes can be moved and clients updated independently. And that
roaming users can always connect to the closest regardless of where
their mailbox really resides.
For email client for china users i will declare mail.example.com in
incoming mail server to fetch emails from US host mail.example.com and will
set mail1.example.com in outgoing mail server option to send email for
china users.
I declared send_to_gatewary router just above dnslookup as follows.
Also, please check following routers those will work as anticipitation ?
And help me on this this solution is appropriate for my situation or not.
Thanks in advance.
send_to_gateway:
driver = manualroute
domains = mail.example.com
transport = remote_smtp
ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
route_list = * mail.example.com
host_find_failed = defer
no_more
dnslookup:
driver = dnslookup
domains = ! +local_domains : mail.example.com
transport = remote_smtp
ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
no_more
Well, if I read your previous posts correctly then domains should be
example.com - i.e. your users have addresses of the form
[email protected]; not [email protected]
The domains condition on the dnslookup router is wrong (I think) - see
http://www.exim.org/exim-html-current/doc/html/spec_html/ch10.html#SECID76
for an explanation of how negative list items work
- As it is after a router which would handle example.com (once
corrected), then it isn't necessary to exclude example.com anyway, so
you could just drop the second part
- If you did need to exclude multiple host lists, I think you would have
to negate each one. Or possibly you can negate the entire condition
(!domains=...), it works in an ACL, but I don't know if it does in a
router definition.
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