Penetrator wont sent mails how to fix it?

Firmware installed is: 38.2.7

I tried multiple servers.

1: our webhosting server. With authentication.

2: our relay server. Open relay for our IP.

3: our local Exchange server. Open relay for the pentest server.

All are not working.

The page does tell me that the test message has been sent, however, I haven’t received anything yet.

 QUESTION:

Do you see anything in log from penetrator IP?
Can you in terminal 

tail -f /var/log/maillog

and see output paste it here

REPLY:

Thanks, that solved the issue. Found that the spamfilter was blocking the test messages. Just received it.