ulimit warning when restarting

When restarting Dovecot 2.2.10 (via atrpms) on RHEL 6, I get the error: Warning: fd limit (ulimit -n) is lower than required under max. load (1024 < 4096), because of default_client_limit

# doveconf default_internal_user default_internal_user = dovecot

Should dovecot print this warning based on $default_internal_user, or based on root?

As root: # ulimit -n 1024

As user dovecot: $ ulimit -n 49152 $ whoami dovecot

# grep dovecot /etc/security/limits.conf dovecot hard locks 49152 dovecot hard nofile 49152 dovecot hard maxlogins 8192 dovecot soft locks 49152 dovecot soft nofile 49152 dovecot soft maxlogins 8192