What switches are you using to call tcpserver with for your qmail-smtpd process?
t ----- Original Message ----- From: Jeff Koch <jeffk...@intersessions.com> To: toaster@shupp.org <toaster@shupp.org> Sent: Mon Dec 29 23:05:30 2008 Subject: Re: [toaster] Why - Received: from unknown The receiving mailserver can do reverse DNS perfectly - just doesn't seem to want to do it during qmail smtp connections. I checked the /etc/nsswitch.conf file and changed it from: hosts: files mdns4_minimal [NOTFOUND=return] dns to: hosts: dns files That didn't seem to help either. Do you think a reboot or a service restart is necessary after making this change? At 11:49 PM 12/29/2008, you wrote: >Jeff Koch wrote: >>Hi: >>Does anyone happen to know why all emails received by qmail are reported >>as 'Received: from unknown' even though the sending mailserver clearly >>identifies itself and has reverve DNS setup? >>Here's a good example from an email I just recieved: >>Received: from unknown (HELO lists.sourceforge.net) (216.34.181.88) > >That suggests the reverse dns lookups are failing on that server. Have you >tried some lookups manually to see if they are working? I had an issue >similar to this just recently with a new server and it took a while to >realise that I had made a mistake in the nssswitch.conf file and it was >trying to resolve everything via ldap instead of via dns. > >Shane Best Regards, Jeff Koch, Intersessions
