Hi Gavin,
Thanks for getting back to me.
Upon further investigation, it looks like there is an issue with the SMTP module. I will try to figure it out.
The module is returning this error: SMTP -> ERROR: Failed to connect to server: php_network_getaddresses: getaddrinfo failed: Name or service not known (0)
I logged into the Apache container, and ran this PHP script:
from the command line, and it worked fine, so the problem is really not in that part of the system.
There is no problem connecting to the mail server from the server command line or from the container command line.
More digging to come.
Thanks,
Cary