I just switched to Zimbra and was quite surprised to see that my normal way of keeping track of birthdays does not work the way I was used to in other programs.

I normally store birthdays as yearly recurring events without an end date in my calender. As start day I use day the person was born including the right year in order to recognise "round" birthdays. Because many of my friends are above 30 this does not work in Zimbra out of the box. Even setting 100 yearly occurences does not work. It stops after 30 years.

Is there a way to change this behavior?

Otherwise I would set every birthday starting in the year 2000 an keep track of the real year in the contacts field tough this is not perfect for families where I normally store only a family contact. Doing it like this would force me to have a contact for each familiy member including children.