Control: tags -1 + fixed-upstream > dns: bad dns reply: *** FATAL PROGRAM ERROR!!\tUnknown instance method > "cname" > dns: [...] *** which the program has attempted to call for the object: > dns: [...] *** > dns: [...] ing.unimore.it.\t86400\tIN\tDNAME\ting.unimo.it. > dns: [...] *** > dns: [...] *** THIS IS A BUG IN THE CALLING SOFTWARE, which incorrectly > assumes > dns: [...] *** that the object would be of a particular type. The type of an > dns: [...] *** object should be checked before calling any of its methods. > dns: [...] *** > dns: [...] Net::DNS::RR::DNAME 2003
This is fixed upstream with https://github.com/apache/spamassassin/commit/61b7f479e436b7c85ccd82931d066f52b651ab30 noah

