[64 bit] Issues with mailserver (Postfix)

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http://ubuntuforums.org – Hello, Recently I installed a mailserver onto my Ubuntu 12.04LTS 64 bit server system. I've installed and configured everything according to this community provided guide https://help.ubuntu.com/community/MailServer. When finished, I experienced a few issues with my mailserver. - I'm unable to send e-mail from my notebook (Using Outlook 2010) and from my phone neither. It's working from localhost (webmail). - When sending an e-mail (as user eric) from webmail (Roundcube) the e-mailaddress is set to [email protected] but I would like to change this to [email protected] because I'm not receiv (Hardware)