Vincent Cheah wrote:
>
> Hi,
>
> We are a small ISP and currently having a mail server (InterMail) serving POP3/SMTP
>access to our subscribers.
> Let's say mail system A= serverA.domain.com.my and user e-mail address like
>[EMAIL PROTECTED]
>
> We planning to migate from this mail system to qmail.
>
> And we already setup FreeBSD+qmail+vpopmail+sqwebmail+qmailadmin to provide the same
>service POP3/SMTP
> Let's say mail system B = serverBdomain.com.my and user e-mail address like
>[EMAIL PROTECTED]
>
> For co-existant purpose (migration) ,
> Is there a POP3 and SMTP proxy solution such that userA POP3 and SMTP access will
>still poiting to serverA and
> qmail user (userB) will poiting to serverB ?
>
> Note : Both server having the same e-mail domain name.
I've never seen a solution for this problem using the software you listed above.
You might want to switch over from one machine to the other instead of trying
to keep both machines up and running at the same time.
Here is one migration plan you can use:
1) create all the accounts on the new machine
2) test the accounts
3) Switch over the IP address of the old mail server to the new mail server
4) Copy over the email from the old mail server to the new mail server.
With this plan you have almost zero downtime (time to switch over IP's)
The users old email will not be available untill the copy is completed.
But they will be able to receive/send new emails.
Ken Jones
inter7
