I get this error in warning log: <2.4> 2019-08-09 00:24:40 Telcontar spamd 25709 - - razor2: razor2 check failed: Connection refused razor2: razor2 had unknown error during get_server_info at /usr/lib/perl5/vendor_perl/5.26.1/Mail/SpamAssassin/Plugin/Razor2.pm line 187. at /usr/lib/perl5/vendor_perl/5.26.1/Mail/SpamAssassin/Plugin/Razor2.pm line 330. <2.4> 2019-08-09 00:24:43 Telcontar spamd 25721 - - razor2: razor2 check failed: Connection refused razor2: razor2 had unknown error during get_server_info at /usr/lib/perl5/vendor_perl/5.26.1/Mail/SpamAssassin/Plugin/Razor2.pm line 187. at /usr/lib/perl5/vendor_perl/5.26.1/Mail/SpamAssassin/Plugin/Razor2.pm line 330. and this other: <2.4> 2019-08-09 08:45:34 Telcontar spamd 19516 - - Use of uninitialized value $4 in concatenation (.) or string at /usr/lib/perl5/vendor_perl/5.26.1/Mail/SpamAssassin/Plugin/URIDNSBL.pm line 1044, <GEN28009> line 860. <2.4> 2019-08-09 08:45:34 Telcontar spamd 19516 - - Use of uninitialized value $3 in concatenation (.) or string at /usr/lib/perl5/vendor_perl/5.26.1/Mail/SpamAssassin/Plugin/URIDNSBL.pm line 1044, <GEN28009> line 860. <2.4> 2019-08-09 08:45:34 Telcontar spamd 19516 - - Use of uninitialized value $2 in concatenation (.) or string at /usr/lib/perl5/vendor_perl/5.26.1/Mail/SpamAssassin/Plugin/URIDNSBL.pm line 1044, <GEN28009> line 860. and a few of these: <2.4> 2019-08-09 08:46:27 Telcontar spamd 19871 - - dns: new_dns_packet (domain=...(.zen.spamhaus.org. type=A class=IN) failed: a domain name contains a null label and these: <2.4> 2019-08-09 08:47:53 Telcontar spamd 20438 - - Use of uninitialized value $2 in concatenation (.) or string at /usr/lib/perl5/vendor_perl/5.26.1/Mail/SpamAssassin/Plugin/URIDNSBL.pm line 1044. <2.4> 2019-08-09 08:55:34 Telcontar spamd 23421 - - Use of uninitialized value $4 in concatenation (.) or string at /usr/lib/perl5/vendor_perl/5.26.1/Mail/SpamAssassin/Plugin/URIDNSBL.pm line 1044. -- Cheers / Saludos, Carlos E. R. (from 15.0 x86_64 at Telcontar)