+>>> processing "accept"
+>>> accept: condition test succeeded
+>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+>>> routing expan@test.ex
+>>> test.ex in "test.ex"? yes (matched "test.ex")
+>>> test.ex in "! +local_domains"? no (matched "! +local_domains")
+>>> expan in "expan"? yes (matched "expan")
+>>> calling fail_expansion router
+>>> fail_expansion router: defer for expan@test.ex
+>>> message: failed to expand "${if with syntax error": unknown condition "with"