I get these from the sa-update cronjob since yesterday; Code: Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/%{ <-- HERE pandoratitle}%/ at /usr/share/perl5/Mail/SpamAssassin/Conf/Parser.pm line 1391. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/%{ <-- HERE pandoratitle}%/ at /var/lib/spamassassin/3.004001/sa_schaal-it_net/70_SCHAALIT_header.cf, rule SCHAALIT_HEADER_4216, line 1. Anyone with an idea how to reliably correct these deprecated regex entries?
The regex seems to be in the ruleset from @florian030 that you installed on your server. Contact him and ask him to change it.