VideoMSN in service log

Hi mates,

We are monitoring a fortigate unit, and this device is sending logs to our SIEM.

There is a particular thing, when we check a top 10 services based on logs: we can see that many of these logs brings the description as "VideoMSN" but, the ports involved in sessions are TCP 25, 22, and so on...

I mean, these ports are well known ports for specific services, but I cannot figure out why logs are showing this "VideoMSN" description. There are other logs that shows the service according to the port involved, for example "SMTP" for port 25.

I would appreciate if someone can give me a hint about this behavior.

Regards,