> > ------------------------------------------------------------------------ > > Subject: > Re: Migrating from Exchange5.5 to Sendmail > From: > Jon Gaudette <[EMAIL PROTECTED]> > Date: > Tue, 11 Jun 2002 22:33:46 -0400 > To: > [EMAIL PROTECTED] > > > Hello Everybody, > > I was wondering if anyone on here has migrated successfully from > Exchange 5.5 to sendmail. I work for a K-12 public school and due to > new Microsoft Licensing, and budget cuts, etc., cannot stay as one of > Microsoft's microserf's. Here is what the boss wants. > > User's unread/read e-mail's must be preserved. Users are idiots, so > they cannot backup their e-mail's before the switch. Due to the sheer > volume of users, it would be impossible to download each user's e-mail > for them, as well. > > We want to keep Outlook as the default client-of-choice for now. In > the *very* near future we will be investigating webmail mods that will > get rid of outlook completely. > > A Global Address book has to be put into place inside Outlook the same > as exchange does it for you. All users rely on this and like the > convenience. If need-be, we could show documentation and "train" a > couple users from each district to help with adding the new address > book in. This global address book, however, should be able to be > changed on the server and then be rolled out to each client > automatically. > > > Now, I've downloaded a couple of imap copy programs, where are suppose > to copy one user's e-mails on one server, and then put them into the > new server in a batch. I have not tried any of them, and was > wondering if any of you have had an opportunity to try any of them, > and if you would recommend one over another. > > Also, if anyone has a way of making the Global Address Book that they > are using currently, or know of, I'd be grateful. > Lastly, I need to know of any webmail mods that would be good for a > red hat 7.1 system. The Global Address Book would have to be > available in this instance as well. > > I appreciate any help that anyone can give me. This is a huge task, > and I have found limited resources online. I am hoping that you folks > can help. > > -Jon "GenKiller" Gaudette > > >
Here's what info I can give you from my many years of battling Exchange. Outlook as a client is nice, but those virii..... You'll need IMAP, so you're on the right track. If you enable IMAP access on Exchange, you can use one of those neat scripts to mass-copy from one server to the other. I've never done it, but the ideas behind it sound simple enought. Personally, this may be the trickiest part, as authentication between the two may be hard to handle. You may have to do a mass password change on Friday night, run the script for every user(and since you know the password now) over the weekend, then all users must change their password on Monday. Some sort of web interface for this would be nice. Once email is on Linux with IMAP, you're halfway there. For Global Adress Book functionality, you'll want to go LDAP, which Outlook supports. OpenLDAP is what you'll need, start learning it now. Once you have that, you'll need to load all the current info from the GAB into LDAP. There may be some perl modules out there that understand GAB, but this you may have to deal with the hard way. Manual entry, ouch! But, LDAP allows lots of neat stuff besides GAB functionality. There's a jpeg option(don't remember exact terminology) that lets you have a jpeg photo in the LDAP database associated with a user. That plus a web frontend would allow for automagic user homepages, sort of. Also, username/password info can be stored in LDAP. With this setup, you can replace Exchange. Things will work just as before, with the only difference being that users may have to click 'here' instead of 'there' in Outlook. For long term planning, I'd scrap Exchange and go with Mozilla/Netscape 7.0(now beta, but will be released soon enough, and is based on solid Mozilla 1.0). For webmail functionality, two of the best are Squirrelmail and IMP. I can't remember if IMP supports LDAP, but I know Squirrelmail does. From within the webmail client, the user can do a quickie search for the user they want and they'll get back as much info as you the admin deems the user should. That's the great thing about standards, you can pretty much be assured of compatibility, if you exclude MS products from this compatibility statement. Good luck. You have a lot of work ahead of you. -- Patrick Paul Systems Administrator Biology Dept., MIT 68-371 617-452-2951 [EMAIL PROTECTED] _______________________________________________ Redhat-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
