Thanks a lot for your reply.
wp-config was correctly edited.
The issue was that I had to point vhost of the secondary domains to main domain folder.
But in this case it works only with A records, as with CNAME it keeps redirecting to main domain homepage.
The important thing is that now it works.
the same here
all tests went fine, but when i’m trying to send it gives error
but it does send email even if it reports error
sorry for the bump
no ideas? 😐