Lockdir Option

The  base option specifies the full pathname of server lock directory. Defaults to  on Solaris and   on Linux, where    is composed of mail server user plus the $SERVERROOT with   replaced by   e.g.,

If the directory does not exist, it will be created.

On Linux, it is a better choice to locate the directory under  rather than under.

IMPORTANT: Stop and restart all Message Store processes immediately after changing this value. New processes will use the new value and be unable to communicate with a stored using the old value.