How to customize section From e-mail:?

In case there is appearing some other e-mail address in notification in section From e-mail:

it means that there is some kind of security system set up on your side.

If you would like to have this section customized it is neccessary to do the following:

1) If you are using SPF

You have to allow our mailserver in the setting of your domain :

v=spf1 mx mx:golibe.com~all

2) If your domain has got SPF record

You have to add SPF into that record the following way:

include:golibe.com

Allways add CNAME record into the domain:

golibe._domainkey.agentura.cz CNAME golibe._domainkey.golibe.com