With the change to 16.03 have there been any issues with PAM authentication? Our development servers are setup to use a PAM module developed in house. I have tested the module and can confirm that it is returning PAM_SUCCESS to ejabberd but every time a user tries to authenticate, the ejabberd server comes back with a failed auth error.
Yes, looking at the ejabberd
Yes, looking at the ejabberd git repository, there was one change in ejabberd_auth_pam.erl between 16.02 and 16.03: