I have a customer with an SV8300 and UCB being used for voicemail.
Problem is often voicemail to email stops working. In order to correct this we have to reboot the UCB server, and sometimes even that doesn't work and would require multiple reboots.
They aren't using Exchange integration, just simple smtp voicemail to email via the SmtpEmail.config setup (smtp relay).

I can see in the CTI\Notification log the following (sensitive info replaced with XXXX and qqqqq);

21:01:20.04 19EC Worker_Email: NotifProfileEmail: Sending email, user=183, email="[email protected]", message="Voicemail 2222 has new mail: Normal: 1", notifProfile=61, s/n=186, job=034BA240h
21:01:20.05 19EC 00A42B6C SmtpMail: Smtp/Method=2
21:01:20.05 19EC 00A42B6C SmtpMail: Smtp/MethodPort/ConnectionTimeoutSeconds=30
21:01:20.05 19EC 00A42B6C SmtpMail: Smtp/MethodPort/ServerName=[X.X.X.X]
21:01:20.05 19EC 00A42B6C SmtpMail: Smtp/MethodPort/ServerPort=25
21:01:20.05 19EC 00A42B6C SmtpMail: Smtp/MethodPort/UseSSL=0
21:01:20.05 19EC 00A42B6C SmtpMail: Smtp/MethodPort/Authentication=1
21:01:20.05 19EC 00A42B6C SmtpMail: Smtp/MethodPort/AuthenticationBasic/UserName=[XXXXXXX]
21:01:20.05 19EC 00A42B6C SmtpMail: Smtp/MethodPort/AuthenticationBasic/Password=[XXXXXX]
21:01:20.05 19EC 00A42B6C SmtpMail: Email/BodyType=0
21:01:20.05 19EC 00A42B6C SmtpMail: Email/AutoGenerateTextBody=1
21:01:20.05 19EC 00A42B6C SmtpMail: Email/From=[[email protected]]
21:01:20.05 19EC 00A42B6C SmtpMail: Email/Charset=[utf-8]
21:01:20.22 19EC Worker_Email: NotifProfileEmail: Email successfully sent, user=183, notifProfile=61, s/n=186, job=034BA240h

Does this mean the email left the server and was accepted for delivery by the server it was sending to? Or does this simply mean the Notification application handed it off to another service on the server for delivery? Any points on trouble-shooting this type of voicemail to email on the UCB? I can only find manuals on Exchange integration and such via the connector, and that's not what's being used here.