Cyrus + LDAP Suggestions/Help

[Igor Brezac]

On Mon, 8 Nov 2004, Michael Nguyen wrote:

> From: "Igor Brezac" <igor at ipass.net>
>> On Mon, 8 Nov 2004, Michael Nguyen wrote:
>
> [snip]
>
>>> Postfix is working such that the mail store for michaeln at test.spam is
>>> /var/Accounts/m.sub/i.sub/michaeln.macnt/
>>
>> postfix must not be used as an MDA (mail delivery agent) when used with
>> cyrus.  Setup postfix for lmtp.  See postfix docs.
>
> Hmm....I considered doing this.  I guess I'll have to try it.
>
>>> How do I get Cyrus to "know" what directory to look in for this user's
> mail?
>>> I'm looking at the imapd.conf man page and I don't see a value that
> matches.
>>>
>>
>> You do not need to know this information.  Cyrus (via lmtp) will 'drop'
>> messages to the appropriate location on the file system.  If you really
>> want to know where the physical location of each mailbox is use 'mbpath'
>> utility.  (Do not try to change user's mailbox manually because more than
>> likely you will corrupt the mailbox)
>
> Hmm...well, I probably should try it before saying anything, but my only
> thought is that I wanted to control mailbox location via LDAP to facilitate
> user migration (which is an inevitable issue).  This might work, but do I
> have any other options?  Being able to re-route a user's mail to another
> server + directory with a mere LDAP change was something that was going to
> be very useful.
>
> What happens if I were to change another attribute of the user (e.g. the
> username)?  This is also a fairly common procedure.  How would that affect
> delivery?  The the Postfix + LDAP delivery scheme, a user's username is
> completely irrelevant.  Mail for that user goes exactly where we want it to.
>
> All of these questions relate to support and scalability.  I sort of fear
> the scenario of "Well, where did the mail go?"  "I don't know...where ever
> Cyrus thought it should go."
>
> I'll try it out and we'll see, but if there's a good answer to my concerns,
> I'd love to hear them.
>

I'll let others tackle this issue.  I do suggest you learn cyrus internals 
before you proceed.  Again, start with the source ($cyrus-imapd/doc)...

-- 
Igor
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