Create a separated mailbox for archived mails

[Claudio Corvino]

Hi Marc,

thanks for replying, I would like to archive e-mail older than 5 years 
on a second storage, it seems like the /namespace/ with a new 
/mail_location/ that you suggested could be good for me, but then I will 
need the auto-archiving script that move mails older than 5 years to the 
/archive/ namespace.

A question: how can I configure client like Thunderbird to access that 
archive namespace so that users can still access their old mails?

Please could you give me some suggestion on how to do that?

Thanks for your time!

Regards

On 17/10/21 12:06, Marc wrote:
> I am not really sure what you are trying to realize with this ldap modification. But afaik you have just one mail_location= configuration per user and that is it. If you want to archive email on 2nd storage you can either use this ALT= storage location or create a namespace, and configure this namespace with a new mail_location. The latter I have done indeed as archive, and after every first quarter I am running an auto-archiving script that moves emails from the usual inbox and send folders to the archive namespace.
>
>
>
>> I have an MTA configured with Postfix that deliver email to an IMAP/LMTP
>> Dovecot server version 2.3.4.1 configured to bind LDAP/AD for users.
>>
>> I would like to configure Dovecot to create another mailbox to archive
>> mails of users to a separated NFS mount.
>>
>> Here is my dovecot-ldap.conf:
>>
>> [...]
>>
>> ldap_version=3
>> auth_bind = yes
>> dn = XXX
>> dnpass = XXX
>> scope = subtree
>> user_attrs = sAMAccountName=home=/mnt/mail-storage-
>> dev/%$,=uid=501,=gid=501
>> pass_attrs = sAMAccountName=user
>> user_filter = (&(objectclass=person)(samaccountname=%n))
>> pass_filter= (&(objectclass=person)(samaccountname=%n))
>>
>>
>> [...]
>>
>>
>> I think I will add another conf file, let's say dovecot-ldap-
>> archive.conf using "url" as LDAP/AD filed to distinguish from normal
>> users:
>>
>> [...]
>>
>> ldap_version=3
>> auth_bind = yes
>> dn = XXX
>> dnpass = XXX
>> scope = subtree
>> user_attrs = url=home=/mnt/mail-storage-archive/%$,=uid=501,=gid=501
>> pass_attrs = url=user
>> user_filter = (&(objectclass=person)(url=%n))
>> pass_filter= (&(objectclass=person)(url=%n))
>>
>>
>> [...]
>>
>> I then added to "test" user a "url" filed into Active Directory named
>> test-archive, but it's not working, when I bind Dovecot with:
>>
>> doveadm user test-archive
>>
>> I receive:
>>
>> field    value
>> userdb lookup: user test-archive doesn't exist
>>
>>
>> With test user it works:
>>
>> doveadm user test
>> field    value
>> uid    501
>> gid    501
>> home    /mnt/mail-storage-dev/test
>> mail    maildir:~/Maildir:INDEX=/var/indexes/test
>>
>>
>> What I'm doing wrong?
>>
>>
>> Thanks in advance!
>>
>>
>> --
>>
>>
>> Claudio Corvino
>> IT Systems Administrator
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