Thanks a lot Troy, Len
-----Message d'origine-----
De : [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]De la part de Troy Settle
Envoy� : mardi 30 mai 2000 09:32
� : [EMAIL PROTECTED]
Objet : RE: [IMail Forum] Migration
To follow up on Len's comments...
Your passwords are most likely encrypted in a one-way hash. Last I
checked (someone can correct me), Imail doesn't support standard password
encryption types at all (MD5, DES). If you don't already have a copy of
your customers' passwords, you'll need to modify your POP3 server (just 3
or 4 lines to write the plaintext passwords to a file) and recompile.
Storing in a db or sql database would be better though... use the username
as a key to prevent duplicate entries.
At any rate, once you have your accounts created in Imail and make the DNS
changes as Len described, you'll also want to bounce users' old mail over
to the new server.
First, you need to reconfigure your current MTA so that it knows that it
it no longer the final destination for your domain. Check
/etc/mail/sendmail.cw or the corrosponding line in your sendmail.cf.
Second, you need to write yourself a nice little script. Something like:
#!/bin/sh
ls /var/mail/ | while read mboxname
do
cat /var/mail/$mboxname | formail -s sendmail $[EMAIL PROTECTED]
done
You probably want to make your script move each mailbox after it's done
(if you have to run the script again, it won't duplicate people's mail).
For what it's worth, I recently moved ~5200 mailboxes from a sendmail
server to Imail. Over all, it went smoothly, though the Imail server (on
twice the hardware) didn't even come close to keeping up. Took nearly 24
hours to complete the process.
Besides a few complaints about *very* slow POP3 and IMAP services and
broken SMTP authentication in Netscape, our customers have adapted quite
well.
Good luck,
--
Troy Settle
Network Analyst
Picus Communications
540.633.6327
** -----Original Message-----
** From: [EMAIL PROTECTED]
** [mailto:[EMAIL PROTECTED]]On Behalf Of Len Conrad
** Sent: Sunday, May 28, 2000 11:04 PM
** To: [EMAIL PROTECTED]
** Subject: Re: [IMail Forum] Migration
**
**
**
** >I'm using sendmail 8.9.3 on a unix machine. I want use now
** imail 6.0 on a
** >NT machine. Do you have an idea to realize the migration
** without stopping
** >for too long the mail service. If you had a similar
** experience please let me
** >know.
**
** "concept" would be to export the acccount names and passwords
** from unix to
** a text file, massage that into a big NT .bat file with the
** adduser.exe command.
**
** Once the accounts existed in Imail, modify all the DNS zone
** files to point
** their MX records at the Imail host. Shouldn't lose any mail at all.
**
** Len
**
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