Aaron Wolfe:
> Hello,
>
> We use reject_unknown_client to fail messages from hosts with no rDNS.
> We have a situation with the host 216.163.249.229, which give the
> following results:
>
>
> NOQUEUE: reject: RCPT from unknown[216.163.249.229]: 450 4.7.1 Client
> host rejected: cannot find your reverse hostname, [216.163.249.229];
>
> There actually is reverse DNS for this address... 239 PTR records!
Postfix uses the SYSTEM LIBRARY function getnameinfo(). If it does
not handle 239 replies, I suggest that you complain to your vendor.
Wietse
