Mar 11 05:47:46 bsd1 sshd[49203]: warning: /etc/hosts.allow, line 23: host name/address mismatch: 195.96.234.30 != pronto.phys.bas.bgE WCPU CPU COMMAND

It means it was trying to look up the reverse DNS entry (PTR) of an IP, but it was configured incorrectly. The IP address resolves to something, and that something doesn't resolve to the IP address.