Hello Lonel, the clean time you see in the logs is in UTC time instead of server time. This is something that is being fixed in SmarterMail17 and will be in the next release. So the clean time will now be in the same timezone as the logs.
So instead of seeing the log you posted it would now look like this:
[2018.11.28] 10:13:28 [redacted IP]Login failed: Too many login attempts for user redacted@redacted.com. Brute force attempts increased to 7. Next clean available at 11/28/2018 10:13:35 AM
Larry Duran
Software Developer
SmarterTools Inc.
www.smartertools.com