Disable user login for a few seconds ?

[Robert Schetterer]

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

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