[Users] Unable to send email using claws mail, fedora 20

[Liz]

On Sun, 25 Jan 2015 19:18:20 -0600
webreg.claws-mail.org at panscend.com wrote:

> There was not a domain name in the advanced tab of Claws. There
> was however an anomaly in the /etc/hostname file. 
> 
> During the install of F20, I had entered an alternate host and
> domain name instead of the usual default of
> "localhost.localdomain". Somehow, not sure how, the hostname
> file ended up with 2 lines like this:
> 
> #localhost.localdomain
> panlap.guypan
> 
> As you observed, that was all picked up by Claws for the EHLO.
> 
> I've been poking around search and there seems to be a split
> opinion on what is valid in the hostname file. Some say lines starting
> with # is a comment like many other system config files. Some say
> hostname should only have a single line.
> 
> Regardless, getting rid of the extra line in hostname allowed Claws to
> function correctly. This reply is actually coming from Claws on Linux.

thankyou!
I've been chasing my tail through Exim trying to find why some mail
doesn't go through because it doesn't have a fully qualified host
and domain name in the mails, and now I see it's actually
my /etc/hostname which is the trouble.