I created a virtual server for a client which hosted only the website.
Email processing (send/receive) will not handle by my server.
However I checked that all emails sending (ie website contact form) from the website could not be received on client’s mailbox.
I looked into maillog, and found something like
Apr 19 11:46:31 host2 postfix/local: 5CFC3633834D: firstname.lastname@example.org, email@example.com, relay=local, delay=0.05, delays=0.03/0/0/0.02, dsn=5.2.0, status=bounced (can’t create user output file)
However if I create a testing mail php script , sending email to whatever email address but not with client’s domain email address, all of them are received successfully.
What’s wrong with it ?