Subj : WSANO_DATA (11004) To : Wilfred van Velzen From : Bj”rn Felten Date : Wed Apr 05 2017 19:23:59 WvV> Maybe it's a reverse dns issue. I would definitely think so, yes. Do you have any problems with your AAAA setting? WvV> That is kind of the norm for IPv6. Ouch! 8-) Well, out of about a dozen IPv6 calls here regularly only four causes the error. WvV> And Gert hasn't got one either on his IPv4 address: WvV> # host fido0.kofobbs.net WvV> fido0.kofobbs.net has address 80.63.101.234 WvV> # host 80.63.101.234 WvV> Host 234.101.63.80.in-addr.arpa. not found: 3(NXDOMAIN) So, that kinda proves our theory then. WvV> If you are using binkd, you could try what happens if you un-set: WvV> # WvV> # Perform reverse resolving (for logging only) WvV> # WvV> backresolv I did, and the error does no longer show in the log file. But I think that's just fixing the symptom not the error. ... --- Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.9.1.16) Gecko/20101125 * Origin: news://eljaco.se (2:203/2) .