On 02/07/2011 09:37 PM, Stephen Cox wrote: > Feb 7 18:17:25 server sshd[3537]: reverse mapping checking > getaddrinfo for AA-xxx-xxx-xxx-xxx.AAAA.host.com failed - POSSIBLE > BREAKIN ATTEMPT! That message indicates that the IP address from which you're connecting has a PTR record of "AA-xxx-xxx-xxx-xxx.AAAA.host.com", but that hostname doesn't resolve to that IP address (or doesn't resolve at all). You'll need to set up DNS properly for this to work.