Hello everyone!
I'm trying to change default Zimbra schedule. So here my goal:
* 1 Full backup per month
* incrementals between
* delete all backups after 3 months. So here's my new schedule:

f 0 1 31 * * -a all --mail-report
i 0 1 1-30 * * --mail report
d 3m 0 0 * * * --mail-report

But I'm not sure if it will work when month have only 29 or 30 days. Or this schedule will work? Please advise.

P.S. We are short on space so we can't have full backup every week .