a question about max delay time

I got two different errors about delay messages.
1, err:CODE: ILLEGAL_DELIVERY_TIME, MESSAGE: the max delay time of message is too large, max is 86400000
2, err:CODE: 13, DESC: timer message illegal, the delay time should not be bigger than the max delay 259200000ms; or if set del msg, the delay time should be bigger than the current time

my question is, what is the max delay time the broker supports now?
and can we change the limit value?