Ok. so this is been a nightmare for me, it may be an ease thing for you, thats why im asking for help.
this is the scenario.
i have a customer that has his domain name, website, and email (microsoft365) with godaddy .
when i try to send an email from my email created with cyberpanel to customer email i get in my imbox this emial Undelivered Mail Returned to Sender*
But when i send it from my email created in cyberpanel to a GMAIL account it goes true…
so i was thinking that maybe his email has a problem, so i send him an email from my Gmail account and he is able to receive it with no problem.
what can be causing this problem. this are the pictures of the email i get and i know alot of you probably are very familiar with this problem but im new to it so please help me out. and if you can help me please.
i already did an email test at email@example.com https://www.mail-tester.com/
and this are my results
other domain is using godaddy. and im going to point his A record to the new website created with cyberpanel but only the A record im going to change it to the new server that is created with digital ocean droplet and cyberpanel