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-rw-r--r--lualib/plugins/rbl.lua2
1 files changed, 1 insertions, 1 deletions
diff --git a/lualib/plugins/rbl.lua b/lualib/plugins/rbl.lua
index 812407f4d..b5232a8b4 100644
--- a/lualib/plugins/rbl.lua
+++ b/lualib/plugins/rbl.lua
@@ -203,7 +203,7 @@ local function convert_checks(rule)
if rule.returncodes and not rule.returncodes_matcher then
for _, v in pairs(rule.returncodes) do
for _, e in ipairs(v) do
- if e:find('%', 1, true) or e:find('[%.%d%x:]%[', 1, false) then
+ if e:find('[%%%[]') then
rspamd_logger.warn(rspamd_config, 'implicitly enabling luapattern returncodes_matcher for rule %s', rule.symbol)
rule.returncodes_matcher = 'luapattern'
break