Thank you @Peter Debik, that mail for gmail is only one from many.
By this https://support.plesk.com/hc/en-us/articles/12377800694423-What-is-SPF-and-how-to-configure-it-on-a-Plesk-server I have same setup (MX for all, tick for SPF in Settings).
But mails are not sending. Here is mail qeue
And...
Please help me. I red all articles, tried ChatGPT 4 and Copilot Pro. But I had no luck.
My issue is with sending emails. They are not sending.
But reality is different
All settings are just as knowledge base and threats with this topic are showing us to be.
The output from the dig +trace...