Hi, also I have the same problem, if in sqid.conf use: dns_nameservers external_ip_dns ... all it's ok, if instead use the internal DNS server (that's present in resolv.conf) then I have problems, also I use fc1 and the version of squid is: Squid 2.5 stable3 ..for this reason had opened the thread with object "Resolve address" > - What's in squid's access.log at that time and for that request ? .. no any !! > - Are you using transp. proxying ? yes. still thanks. Salvatore.