Exchange logs not truncating in DPM

Hi All,

I have an issue where I run full backup of Exchange database using DPM, my problem is the logs are not truncating and leaves the log files in the Exchange Server its getting bigger now. Any suggestion to this concern?

I also have one mailbox database that the status is Failed and Suspended is this also causing the problem on not truncating all the logs on each mailbox database?

Thank you,

Ken