[MaraDNS list] MaraDNS and nproc limit problem

Hello,

I have problem with maraDNS and nproc limit.

Whatever i set in /etc/security/limits.conf maradns process has limited 
to 64 processes
# cat /proc/`ps -e | grep mara | cut -d ' ' -f 1`/limits | grep 'Max 
processes'
Max processes             64                   64 
processes

This gives effect in dmesg like that:
grsec: From 192.168.67.2: denied resource overstep by requesting 64 for 
RLIMIT_NPROC against limit 64 for /usr/sbin/maradns[maradns:26027] 
uid/euid:99/99 gid/egid:99/99, parent /usr/bin/duende[duende:26026] 
uid/euid:0/0 gid/egid:0/0
grsec: From 192.168.67.2: denied resource overstep by requesting 64 for 
RLIMIT_NPROC against limit 64 for /usr/sbin/maradns[maradns:26027] 
uid/euid:99/99 gid/egid:99/99, parent /usr/bin/duende[duende:26026] 
uid/euid:0/0 gid/egid:0/0

It's strange because duende has diffrent limit
Max processes             63859                63859 
processes

I use gentoo with hardened kernel and mara 1.4.12

Please help, and sorry my english.