/etc/courier/userdb

[Jillian]

After migrating something weird happend to my system.
Today one my customer removes mailbox from system and all mail account "locked".
I found answer to this error in /etc/courier/userdb, where uid was wrong so I changed it to right one, saved file and run makeuserdb command.
Also I checked that /etc/ispcp/ispcp.conf have right value.
Then i restarted ispcp_daemon and ispcp_networks to be sure that changes are made. Everything works fine.

After few more minutes same customer made new mail account and that error occurs ones again, uid was changed to 1002 and it should be 1001, like ispcp.conf has defined.

So question is; Is there anywhere else defined that uid?