Solved the problem. It was the MX entry. Thanks for your help and time!
I've just tried that, it works. But customers should be able to only enter their mail and their password, see below (This works with Plesks IMAP)...
Thanks for your reply! I am using Windows 10 default Mail Client by Microsoft which every Windows 10 version has. (It is up-to-date) It does...
Thanks for your fast reply. The smtp session I posted was from tool which checked the smtp configuration, ensuring that the certificates are...
Hello, I am struggling for days now trying to figure out why mails sent from my windows Mail client stay in outbox. After checking a lot of thread...
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