Email with Postfix, Dovecot, and MySQL one virtual_user work the other go in SPAM

Hi,

i have followed the linode guide step by step:

https://www.linode.com/docs/email/email … -and-mysql">https://www.linode.com/docs/email/email-with-postfix-dovecot-and-mysql

i have added two virtual users:

theking@kingofmagic.it

noreply@kingofmagic.it

and two aliases:

info@kingofmagic.it

trial@kingofmagic.it

Then i have tried to send some email test to:

http://www.mail-tester.com

and pass all test with a score of 10/10, but when i send an email from "noreply@kingofmagic.it", "info@kingofmagic.it" or "trial@kingofmagic.it" go in the SPAM folder instead if i send an email from "theking@kingofmagic.it" go in the normal INBOX, i have searched a lot on the web and i have find this tool:

http://mxtoolbox.com/domain/kingofmagic.it/

That give me some warning, I do not know if this is somehow related to my problem.

Anyway i don't know if helps but this is my postfix conf in main.cf:

myhostname = kingofmagic.it

alias_maps = hash:/etc/aliases

alias_database = hash:/etc/aliases

myorigin = /etc/mailname

mydestination = kingofmagic.it

relayhost =

mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128

mailboxsizelimit = 0

recipient_delimiter = +

inet_interfaces = all

anyone can suggest me something?