MtaEhloVariable

Variables available in expression contexts that reference MtaEhloVariable.

Variable	Description
listener	Name of the listener that accepted the connection
remote_ip	IP address of the client
remote_port	Port of the client (number)
local_ip	Local IP address the client connected to
local_port	Local port the client connected to (number)
protocol	Listener protocol, smtp or lmtp
is_tls	Whether the connection uses TLS (boolean)
helo_domain	Host name given in EHLO or HELO, empty before it is sent
asn	Autonomous system number of the client, 0 when unknown
country	Country code of the client, empty when unknown