diff --git a/setup/mail-dovecot.sh b/setup/mail-dovecot.sh
index 1cd0398b..a429ea22 100755
--- a/setup/mail-dovecot.sh
+++ b/setup/mail-dovecot.sh
@@ -38,7 +38,7 @@ apt_install \
 # would be 20 users). Set it to 250 times the number of cores this
 # machine has, so on a two-core machine that's 500 processes/100 users).
 tools/editconf.py /etc/dovecot/conf.d/10-master.conf \
-	default_process_limit=$(echo "`nproc` * 250" | bc)
+	default_process_limit=1024
 
 # The inotify `max_user_instances` default is 128, which constrains
 # the total number of watched (IMAP IDLE push) folders by open connections.