Hello, I have a small issue with VestaCP, not sure if you have had the same problem before. I'm trying to send email with thunderbird as my email client, the message I'm getting its the following: An error occurred while sending mail. The mail server responded: Helo name contains a ip address (HELO was [192.168.1.50]) and not is valid. Please verify that your email address is correct in your mail preferences and try again. I double checked the settings in thunderbird: IMAP: mail.domain.com - port 143 - STARTTLS - Normal password SMTP: mail.domain.com port 587 Thunderbird is able to download the email without a problem, the only thing I added to my VestaCP install was CSF following the instructions from Steven's blog I have done the following: * Change the LAN IP from the computer (wifi and wired) * Disable CSF (same error) Do you have any suggestions or tips?