Dear All, A thanks to all those whom have contributed to qmail - I've used it on lots of servers for 9 months with very few issues, and am very happy with it. I am having a few problems which I believe are not qmail issues - but I need more info before I contact other admins. I have a qmail setup on a pentium 90 (16 meg ram) that manages a few (2 real domains - with about 10 low trafic aliases) domains with vpopmail. Trafic is very low! I find repeated entries: Jun 15 10:21:15 mailgate qmail: 961064475.400874 delivery 17215: deferral: Sorry,_I_couldn't_find_any_host_by_that_name._(#4.1.2)/ I get arround 200 messages a week - that appear to be arround 10 messages to the same domain - in this case smartaxis.co.uk - here is a part of header: > >Received: from mailgate.pipistrel.com ([193.195.219.40] verified) > > by smartaxis.co.uk (CommuniGate Pro SMTP 3.2.4) > > with SMTP id 338741 for [EMAIL PROTECTED]; Fri, 16 Jun 2000 > 16:30:36 +0100 > >Received: (qmail 10115 invoked from network); 16 Jun 2000 11:34:19 -0000 > >Received: from pc27.pipistrel.com (HELO pipistrel.com) (192.168.1.27) > > by mailgate.pipistrel.com with SMTP; 16 Jun 2000 11:34:19 -0000 I.e the messages are defered for arround 6 hours (which I know is qmail expected behavour ..) What excactly does the: deferral: Sorry,_I_couldn't_find_any_host_by_that_name._(#4.1.2)/ Mean - is I have have the MX record but cannot resolve the name to an IP ? or I cannot get the MX record ? or I have an IP but cannot get through to the box ? It all sounds to me a DNS issue - The server is also an internal DNS for the 20 or so PC's in the office - but this "appears" to be fine. Any help would be much appreciated. Greg Cope