diff -Nur smeserver-dovecot-1.4.0/root/etc/e-smith/templates/etc/dovecot/dovecot.conf/27Limits smeserver-dovecot-1.4.0_bz8082/root/etc/e-smith/templates/etc/dovecot/dovecot.conf/27Limits
--- smeserver-dovecot-1.4.0/root/etc/e-smith/templates/etc/dovecot/dovecot.conf/27Limits	1970-01-01 01:00:00.000000000 +0100
+++ smeserver-dovecot-1.4.0_bz8082/root/etc/e-smith/templates/etc/dovecot/dovecot.conf/27Limits	2013-12-24 10:51:59.776494538 +0100
@@ -0,0 +1,18 @@
+{
+
+my $ConcurrencyLimit = $imap{ConcurrencyLimit} || '400';
+my $ConcurrencyLimitPerIP = $imap{ConcurrencyLimitPerIP} || '12';
+my $ProcessMemoryLimit = $imap{ProcessMemoryLimit} || '256000000';
+
+$OUT .=<<"END";
+
+service imap {
+  process_limit = $ConcurrencyLimit
+  vsz_limit = $ProcessMemoryLimit
+}
+protocol imap {
+  mail_max_userip_connections = $ConcurrencyLimitPerIP
+}
+END
+
+}