We have upgraded to Community 13 from 12 and notice Verint is trying to start a TLS session to the SMTP relay, which it shouldn't. Configuration is specifically set to not do that. User emails are not going out/not being received. Our firewalls show connection to the internal mail relay from our production Verint servers, so it's trying to at least send emails.
Here are our SMTP settings, which shows TLS shouldn't try to start a session to the SMTP
Packet capture below shows the start of the SMTP session
220 XXXXXXXXXX.XXXXX.mail.mil ESMTP
EHLO XXX-XX-X-VJ1
250-XXXXXXXXXX.XXXXX.mail.mil
250-8BITMIME
250-SIZE 72351744
250 STARTTLS
STARTTLS
220 Go ahead with TLS