I have a very serious problem. I cannot a create new mail user at all. When trying to create new user, I get following message:
"The user name has to contain a minimum of 4 and a maximum of 32 letters or figures and has to begin with a letter."
However, the username is long enough and it begins with a letter. I have tried all possible combinations with no success.
I have allready checked the following link:
I tried to modify isp_username.plugin.php file, but it didn't help. I also tried to comment the error message line, but it didn't help. (Well, after that I didn't get the warning message of course=) ).
What could be wrong with my ISP_config?