On 11.01.2018 17:44, Adam Weremczuk wrote: > 11437 read(4, "from=\"*.example.com\" ssh-rsa AAAAXXXXXXXXXX"..., 4096) > = 4096 > Connection is established fine when I replace *.example.com with an IP > address but that's not very scalable. i guess, you have to set 'UseDNS yes' in sshd_config. best regards Ulf