How to clear disk space / logs

Hello,

Currently, I have about 50 GB of logs, most of them being used by `mail.info*` and `syslog*`

I am not looking to store more than 90 days of logs. I've `logrotate` but `mail.info` remained at 15G, along with some other logs, which is huge considering that the PMG has very little traffic.

Would it be possible to clear those logs?

Thank you