This is related to https://www.experts-exchange.com/questions/29173852/phpmailer-mailbox-unavailable.html
I’m testing sending out automated emails from http://selfregistration.iwscc.ca/email_test/index.php
but not all are going through. For example, when I send to firstname.lastname@example.org I get “..mailbox unavailable or not local…”.
Please ignore “email sent” in this instance, because I quickly wrote the script without any error testing. However, it is sending to the following
email@example.com (hosted by Microsoft, also mailbox is not local, but working)
firstname.lastname@example.org (hosted by Google, not local and working)
One thing that I found strange when receiving the credentials for email@example.com as user is that said that if I want to encrypt emails, I need to purchase SSL. I know usually the SSL is for the server side, not client side. I am thinking that maybe that the iwscc.ca is some type of a budget server, but I cannot see how this relates to my script, which is at another server, and it should come down to sending a regular email. Manually, you are able to email firstname.lastname@example.org.
What could it be?