No problem; 'grep -Ev "^\s*quota_warning.*$" /etc/dovecot.conf > /etc/dovecot-noquota.conf' solved it for now...
Just out of curiosity, how has this been addressed in 2.0?
Actually I just tried this and it doesn't appear to work:
Fatal: Error in config file /etc/dovecot-noquota.conf: deliver doesn't support !include directive
I checked deliver.c in both 1.1.8 and 1.2.4 and it doesn't look like it's supported in either.
Oh. You can do the same thing manually though. /etc/dovecot-noquota.conf.in contains the mail_plugins setting and then have some script that does cat /etc/dovecot.conf /etc/dovecot-noquota.conf.in
/etc/dovecot-quota.conf and try to remember to run it whenever
dovecot.conf is updated. :) Or make it automatic by running some deliver.sh that checks if it has to be done.
This is anyway also fixed entirely in upcoming Dovecot v2.0.