You can check in scrollout log if there is a connection logged from your email server...
Messages shown in GUI are from /var/log/mail.info Other logs are in various files...
After update to latest May 23, 2016, 9:21 AM v.1 Scrollout GUI opens password change...
See http://www.postfix.org/FORWARD_SECRECY_README.html#status
1st: Your internal server is not configured properly and it sends malformed emails...
Linux host 3.2.0-4-amd64 #1 SMP Debian 3.2.63-2+deb7u1 x86_64 GNU/Linux Scrollout...
Linux host 3.2.0-4-amd64 #1 SMP Debian 3.2.63-2+deb7u1 x86_64 GNU/Linux Scrollout...
Linux host 3.2.0-4-amd64 #1 SMP Debian 3.2.63-2+deb7u1 x86_64 GNU/Linux Scrollout...