Postfix smtp - odesilani mailu na smart hosta

Mám veřejný smtp server. 

Všechy virtuály posílají zprávy přes tohoto smarthosta

Začal jsem řešit hlášky google, kdy hlásil: 

Authentication-Results: mx.google.com;

       spf=neutral (google.com: 46.174.56.234 is neither permitted nor denied by best guess record for domain of root@web.home.kubesa.net) smtp.mailfrom=root@web.home.kubesa.net

Po úpravách:

Authentication-Results: mx.google.com;

       spf=pass (google.com: domain of root@kubesa.net designates 46.174.56.234 as permitted sender) smtp.mailfrom=root@kubesa.net

Úpravy

vim /etc/postfix/main.cf

...

smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination

myhostname = kubesa.net

alias_maps = hash:/etc/aliases

alias_database = hash:/etc/aliases

myorigin = /etc/mailname

mydestination = web.home.kubesa.net, localhost.home.kubesa.net, localhost

relayhost = smtp.home.kubesa.net

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

mailbox_size_limit = 0

recipient_delimiter = +

inet_interfaces = all

inet_protocols = ipv4

cat /etc/mailname

kubesa.net