error 554

Hello all! I purchased a Plesk license after making a few tests in trial. I configured a domain in Ionos, changed nameservers to point to Plesk and everything is working perfectly (DNS prop is 100%). My problem is, when I send emails (from [email protected]) to Ionos customers, they...

Hi All, I am new here and i start this discussion because after i made some research i have not find a solution. I have a VPS Cloud with ubuntu and last version of Plesk. I think is configured correctly but in the same time i have problem with the outgoing mail when i try to send a email via...