==== Provide required information ====
- iRedMail version: Last
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): Mysql
- Linux/BSD distribution name and version: Centos 6
====

Hi,

I installed the latest version of iRedMail.
It works like a charm, but when i want to send a email using the sendmail command it goes to spam

I use it this way echo message | sendmail -f "acc@domain.com" -F "acc"

what i'm doing wrong?
If i use the smtp it works well (in a external client, like MAIL on mac)

I need to authenticate?
How can i do that?

Thanks