Can't send - smtp error 250

[mcsaban]

Hy. I have the same problem when im trying to send email. Is ther anny more help? Thank you.

[mcsaban]

Problem is in:

// SMTP HELO host
// Hostname to give to the remote server for SMTP 'HELO' or 'EHLO' messages
// Leave this blank and you will get the server variable 'server_name' or
// localhost if that isn't defined.
$rcmail_config['smtp_helo_host'] = 'I LEFT EMPTY SPACE HERE AND IT WORKS';