The instructions for the custom domain says to CNAME help.example.com to tenderapp.com. That's not ideal, because now help.example.com will inherit all the records from tenderapp.com; not just the A record needed for the website.
Please setup "custom.tenderapp.com" (or whatever) with just an A record for us to point to instead.

#1 Posted by Courtenay Support staff on 06 Dec, 2008 01:04 AM
help.tenderapp.com would work, right? it's just looking up the IP address.....
#2 Posted by Ask Bjørn Hanse... on 06 Dec, 2008 01:24 AM
Nope, help.tenderapp.com is a CNAME to tenderapp.com, too:
help.tenderapp.com. 1800 IN CNAME tenderapp.com. tenderapp.com. 1800 IN A 209.20.65.51
#3 Posted by Courtenay Support staff on 08 Dec, 2008 06:37 AM
www.tenderapp.com is now an A record. Updated the FAQ.