The following blogpost describes my experience when migrating from courier imap to an exchange 2007 server with the help of imapsync. The intend is not to provide a complete howto but rather reflect my thought and experiences during the migration phase.
Continue reading “Migrating from courier imap to exchange 2007 using imapsync”
One not obvious feature in courier imap is the superuser account. The feature is a bit hidden in documentation for courier-authlib (see man auth_generic). It is based on the IMAP group functionality of courier.
You can assign a user account to different groups independently from other (system) groups the belongs to. The group assignement is implemented with the option field in courier-authlib, see man auth_generic.
There is a special group name “administrators”. If you assign one account to that group you have automatically full access to all other users mailboxes and folders over the #shared namespace. This is especially usefull when doing e.g. email migration over IMAP from one server to another.
If you use courier-authlib-ldap there is neither a explicit option field nor a groups field in couriers LDAP scheme. But you can assign arbitrary text attributes to group setting with the LDAP_AUXOPTIONS variable. As I don’t use the sharedgroup attribute I simply misused it for the group setting by adding the following to /etc/authlib/authldaprc:
LDAP_AUXOPTIONS disableimap=disableimap,disablepop3=disablepop3,disablewebmail=disablewebmail,sharedgroup=group
Its quite annoying that in screens default settings you cannot scroll back in history like you used to with shift-pageup/shift-pagedown,
In order to be able to use the local scroll history of your terminal add this to your ~/.screenrc
termcapinfo xterm|xterms|xs ti=\E7\E[?47l
Next project in git: find_orphaned_rpm_etc_files
Finds orphaned rpm files under /etc like *.rpmnew, *.rpmsave or *.rpmorig automatically generated by rpm on update. RPM created these files if a software update has taken place and it cannot update the configuration files itself. These files need to be solved by root manually.
I am about to move to git. One of the first projects is cleanup_old_files. From README: