==== Required information ====
- iRedMail version: 0.4.1
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): psql
- Web server (Apache or Nginx): apache
- Linux/BSD distribution name and version: Ubuntu 12.04
- Related log if you're reporting an issue:
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I am trying to connect a scanner and I have other not so smart devices I need to connect to my mail server for smtp purposes. How can i do this without requiring authentication?