How to send Mails to New Backend Servers
Hi
i). we have our MTA's supporting for two domains let us consider
(domain1 & domain2 ) .
ii). The mails for two domains(domain1 & domain2) are stored in the
same backend servers.
iii). As the users are growing more so we decided to put new seperate
backend servers for (--domain 2--) and we are planning to ROUTE
the messages of Domain2 to new backend servers from our MTA's
Now my questions are..
(1) Now i want to create seperate channel named (tcp_new) and add
appropriate rewrite rules for all new backends.
how i can do this ?
Answer
i. i've to add the rewrite rules in ( part I : rewrite rules of )imta.cnf file
corresponding to new channel created
ii. I think i've to create new channel in the ( part II : channel blocks )
imta.cnf file
(2) what are the options i've to edit in mappings file?
(3)what are all the files i have to edit inorder to ROUTE the messages of
domain2 to NEW Backend servers.?
Thanks in Advance
Jai
[1082 byte] By [
bsnl-nib] at [2007-11-26 10:21:14]
# 1
Not quite sure I understand.
Why new channels?
All you have to do to route your mail to the different servers is to change the value of "mailhost" in ldap, for each user.
Creating a new channel, and more rewrite rules won't work, in any case. If you succeed in actually sending mail to the new server, it will simply be forwarded to the server that "mailhost:" points towards, anyway.
The tool I'd be tempted to use to "move" your users is
MoveUser
which can be set to
Migrate the mailbox
Change the ldap value
all at once, automatically.
# 2
Hi Jay
I will try to explain you in detail
Our setup includes 1mx server,1mr server,1 ldap server,2 pop servers &
this setup is supporting for two domains(consider as domain1 & domain2).
Now we are planning to migrate domain2 users from the above setup to our new servers.
The new server setup includes 1mx server,1mr server,1 ldap server,2 pop servers.
now my questions are...
1. How i have to migrate user mail boxes from old messages store
to new one?
I'm planning to put users in hold position in LDAP then i'm going
use imsbackup & imsrestore to move the users.is it correct ?
2. Around two lakh users are there for domain2 & if i'm migrating all the
users at a time then each and every user will get downtime of around 24
hours.so, i don't want to migrate all the users at a time.
Instead of that i'm planning to group say 20 thousand user mailboxes at
time and i will transfer only those 20 thousand user mail boxes from old
servers to new servers. By doing this way each and every users will get
only two hours downtime.
so here how i have to group the users & which command is best to do
the above task?
Thanks in Advance
# 3
1. How i have to migrate user mail boxes from old messages store
to new one?
You do have options.
You can use
MoveUser
you can also use imsbackup/imsrestore
and, you can even simply copy the mail folders over, and run reconstruct -m afterwards.
Please see several other discussions on this list, under the general search, "migration"
2. Around two lakh
Sorry, I don't understand the word, "lakh"
users are there for domain2 & if i'm migrating all the
users at a time then each and every user will get downtime of around 24
hours.so, i don't want to migrate all the users at a time.
Instead of that i'm planning to group say 20 thousand user mailboxes at
time and i will transfer only those 20 thousand user mail boxes from old
servers to new servers. By doing this way each and every users will get
only two hours downtime.
so here how i have to group the users & which command is best to do
the above task?
You can use imsbackup/imsrestore with a list of users.
You can use MoveUser with a list of users.
If you choose MoveUser, you can move the users with essentially no downtime, only a few minutes for each user.....
