List Mail User wrote:
In other words, lowercase is conformant. and your first point is not correct (though all the examples do show uppercase). However, you are completely correct that the "helo=" is flat out wrong,
why? it's inside a comment, no?
but with a slight
variation, and it becomes something like "(watson1 [4.16.241.28])" which is not only conformant, but is the the typical behavior or both sendmail and postfix.
except that here the situation is reversed.
while postfix and sendmail use "from heloname (client_namer [client_ip])", others such as qmail prefer "from client_name ([client_ip]) (helo heloname)" or other variants.
