Disable user login for a few seconds ?

[Nick Edwards]

stop mail server daemons (you DO have a backup MX I hope  if you only
have one mail server), rsync, (or if theres not much, sshfs and "cp
-a") start mail server daemons.

if this is a different machine, with new IP, hope you changed your DNS
to TTL 0 - and did it at least 24 hours ago so changes are picked up
right away (dont forget to reset TTL to  1D again)


On 7/4/14, Florent B <florent at coppint.com> wrote:
> On 07/04/2014 11:33 AM, Robert Schetterer wrote:
>> Am 04.07.2014 10:52, schrieb Florent B:
>>> Hi all,
>>>
>>> I need to move e-mail files of my users from one file system to another.
>>>
>>> I use a MySQL backend on Dovecot 2.1.
>>>
>>> How can I do to disable temporary an account while moving files ?
>>>
>>> I have an "active" bit in my DB, but if I set it to 0, my MX servers are
>>> bouncing mails.
>>>
>>> How can I do to disable temporary an account ? In fact, I need dovecot
>>> not to do any change on files...
>>>
>>> I think I could change account password for a while, and reset it after
>>> migration, but it will disturb connected users.
>>>
>>> Maybe I could chmod 0 files on my old file system during migration ? How
>>> Dovecot will act ?
>>>
>>> Thank you :)
>>>
>>> Flo
>>>
>> read about this
>>
>> http://wiki2.dovecot.org/Authentication/RestrictAccess
>>
>> and/or
>>
>> if your user has static ip use firwall to reject ( be aware of nat )
>>
>> and/or
>>
>> change behave of sql active table with i.e postfix to tmp fail etc
>>
>> i.e ( dont copy paste ,must fit to your postfix(sql)config !!! )
>>
>> smtpd_recipient_restrictions = reject_unknown_recipient_domain,
>>                                reject_non_fqdn_recipient,
>>                                permit_mynetworks,
>>                                check_recipient_access
>> mysql:/etc/postfix/mysql_virtual_inactive_mailaddress.cf,
>>
>> mysql_virtual_inactive_mailaddress.cf
>>
>> ...
>> query = SELECT CONCAT('421 mailaddress %s is set in inactive mode')
>> address FROM mailbox WHERE username='%s' AND active = '0'
>>
>> be aware of all other involved postfix/sql tables where active = 0 is
>> honored too, do hard testing before use in production
>>
>> after all change password might be the most easy way for only seconds
>>
>> Best Regards
>> MfG Robert Schetterer
>>
>
> Thank you very much Robert.
>
> I also had a look at "dsync" tool. But I think it handles only mails
> directory, and not all user's home (my users's home contains indexes,
> Maildir and sieve directories).
>