Can somebody help me please?
Ok, So I deleted the smtpd_helo_restrictions line, however I have still same problem.
//EDIT: After I readed my respond I finaly saw the marked...
I'm running CentOS7. All stuff was great and working, but then postfix was updated and now I'm unable to send emails. I have currently...
What you mean by "got hacked"? If somebody has your Wordpress password, then change it.
There will be problem with permissions.
Try running chown -R web1:client1 /var/www/clients/client1/web1/ as root.
You should ask in the ISPConfig section.
Separate names with a comma.