We do not directly support Linux based Email clients however if they support standard POP and IMAP configurations then they should be configured using the same parameters as Outlook. The incoming and outgoing (POP and SMTP) server names will be mailserver.lhhosting.com. In order to send Email you must make sure you have configured your mail client to "Authenticate" before sending mail. Also make sure you are logging on to the mail server using your full email address.