Using this tutorial on www.howtoforge.com, I have managed to set web server. It is basically Ubuntu 14.04 (nginx, BIND, MySQL, PHP, Postfix, Dovecot and ISPConfig 3). Currently server host only one domain that is telosmedia.org and it seems that everything works OK. However I have hard time to figure out how to make email work. What I have done so far: I manage domain's DNS's through amazon route 53. Here is MX record for the domain 1 telosmedia.org. 5 telosmedia.org. 10 telosmedia.org. 1 mail.telosmedia.org. 5 mail.telosmedia.org. 10 mail.telosmedia.org. Using ISPConfig interface, I have set email domain name and mailbox. I can access mailbox via squirrelmail. However, mailbox does not receive incoming massages. When I try to send a message, server hangs. Can anyone give me a hand on this issue and provide a step-by-step guidance how to make email work on the server? Thank you in advance!