Re: Difficulty triggering SPF_FAIL

[Benny Pedersen]

Jeremiah Rothschild skrev den 2015-07-16 02:53:

Ah. I didn't realize HELO had to be FQDN. Nice catch, David. Thanks!

http://www.postfix.org/postconf.5.html#smtp_helo_name

if using postfix, if its [127.0.0.1] as helo name postfix will accept 
it, but reject 127.0.0.1