Originally Posted by cryptic
I see. But I use [DOMAIN]_ for my prefix and it doesnt look like I can have a username longer than 32 characters which leaves me no space to create a user name.
Thats something else. Not all linux distributions support usernames longer then 32 Chars, thats why we dont use this prefix by default.
Please change the field user_username in the table isp_isp_domain to varchar 64 or even 255.
You may also have to edit the max length in the username regex in the file /home/admispconfig/ispconfig/plugins/ispconfig_username.plugin.php, but I'am not sure if this is nescessary.