Migrating from courier to cyrus

Ken Murchison ken at oceana.com
Wed Sep 8 20:15:34 EDT 2004

Gerald Drouillard wrote:

> Maykel Moya wrote:
>>> Christiano Anderson wrote:
>>>> Hello,
>>>> I am trying to migrate a server with 10K accounts under courier Imapd
>>>> to Cyrus. I have got the imapmigrate from
>>>> http://sourceforge.net/projects/cyrus-utils/, but while I start the
>>>> script, it creates only empty folders. No messages are migrated to
>>>> Cyrus.
>> Can you comment some thoughts on what make you to change from courier to
>> cyrus ?
> For me, the driving force is that most of the groupware products (Kolab, 
> etc.) require it.  It appears that the shared folders in Cyrus, is what 
> Cyrus does better than most of the other IMAP servers.  I could never 
> get courier's shared folders to work consistently with all the users.  I 
> sure hope it works better in Cyrus.  On the other hand, I personally 
> like the Maildir's of courier rather than Cyrus and courier has been 
> very reliable with many concurrent users and large email accounts.

The main reason *should* be that Courier isn't IMAP compliant (its 
IMAP-like, but not complaint per RFC 3501), and the author has no 
intention of making it so.

There are plenty of threads on mailing lists and newsgroups which 
discuss this.

Kenneth Murchison     Oceana Matrix Ltd.
Software Engineer     21 Princeton Place
716-662-8973 x26      Orchard Park, NY 14127
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