[Discuss] Curious DNS Lookups

[Ed Fletcher]

I've just (yesterday) set up a pi-hole on my home network.  Looking at 
the query log, I'm amazed at how many queries are being sent to the 
nameserver.  And I see a fair number of queries that I can't explain.

My ISP sets the WAN domain name on the router.  This has been passed on 
the resolv.conf on my main machine.  So when my email client checks for 
new mail, a query is sent for mail.fletcher.ca.  The odd thing is that a 
query is also sent for mail.fletcher.ca.hostname.com (hostname 
substituted for the actual hostname).

So I edited resolv.conf to put in my own hostname.  Now the additional 
queries are for mail.fletcher.ca.fletcher.ca, which still seems strange.

I'm having no problems with my email.

Should I just eliminate the hostname from resolv.conf?  Why are these 
extra queries being made?

BTW, the pi-hole is a pretty cool project!

Thanks,
Ed
-- 
Ed Fletcher

"Where it is a duty to worship the sun it is pretty
sure to be a crime to examine the laws of heat."
- Christopher Morley