When sending to a specific domain we get an NDR stating
"You do not have permission to send to this recipient.
For assistance, contact your system administrator.
<mail #5.7.1 smtp;554 5.7.1 Your HELO
argument, mail, is not a fully-qualified hostname or IP
address. Please contact your system administrator and ask
them to configure your mail server to issue a HELO command
with a valid argument.>"
Our SMTP connector is currently set up to broadcast EHLO
to outbound servers ( with no problems ). If I switched
our virtual server to broadcast the HELO command instead:-
a) Would I able to send successful messages to the domain
I'm having problems with?
b) How would it affect all other outgoing mail?
In a nutshell what's best to use HELO or EHLO???