Email notifications not working

Hello,

I'm having an issue with email notifications. What it seems to boil down to is that my mail server requires a HELO with the FQDN of the sender. unRAID sends just tower and not tower.example.com.

If I edit /boot/config/ident.cfg and change name to tower.example.com it works fine, but I also get the error in Settings > Identification that it is an invalid NetBIOS name.

My /boot/config/ident.cfg currently looks like this:

NAME="tower"
timeZone="America/Denver"
COMMENT="unRAID Server"
SECURITY="user"
WORKGROUP="WORKGROUP"
DOMAIN=""
DOMAIN_SHORT=""
hideDotFiles="no"
localMaster="yes"
USE_NTP="yes"
NTP_SERVER1="x.x.x.x"
NTP_SERVER2="x.x.x.x"
NTP_SERVER3="x.x.x.x"
DOMAIN_LOGIN="Administrator"
DOMAIN_PASSWD=""
SYS_MODEL="Custom"
SYS_ARRAY_SLOTS="8"
SYS_CACHE_SLOTS="1"

I tried to manually set the DOMAIN to my domain, but that didn't do the trick. From some searching I found this post/: http://lime-technology.com/forum/index.php?topic=37042.msg346778#msg346778 which suggests editing /etc/ssmtp/ssmtp.conf  with

rewriteDomain=<yourdomain-name>
FromLineOverride=YES

However, those options were already set.

Any thoughts on how to get this working?