7.8. Disconnect

This script is executed when the client has disconnected.

7.8.1. Variables

These are the pre-defined variables available for each command. Depending on when the disconnect script is executed, the different objects may contain different information.

Variable	Type	Read-only	Description
$arguments	array	yes	Context/hook arguments
$connection	array	yes	Connection/session bound
$transaction	array	yes	Transaction bound (empty)
$context	any	no	Connection bound user-defined (default none)

7.8.1.1. Arguments

Array item	Type	Example	Description
close	string	“local”	Who initialized the disconnect (local or remote)
reply	array	[“code” => 250, “enhanced” => [1, …]	A SMTP protocol response (if available)
error	array	[“reason” => “….	If an error occurred (if available)

7.8.1.1.1. Error

Array item	Type	Example	Description
reason	string	“Connection reset by peer”	The error message
type	string	“socket”	The type of error (if avilable, socket or tls)
code	number	54	The error code (for socket it’s an errno and for tls it’s an OpenSSL error code)

7.8.1.1.2. Reply

Array item	Type	Example	Description
code	number	221	A SMTP status code
enhanced	array	[2, 5, 0]	A SMTP enhanced status code
reason	array	[“Bye”]	A SMTP response text
state	string	“QUIT”	An enum to indicate which issued SMTP command triggerd the disconnect

7.8.1.2. Connection

Array item	Type	Example	Description
id	string	“18c190a3-93f-47d7-bd…”	ID of the connection
remoteip	string	“192.168.1.11”	IP address of the connected client
remoteport	number	41666	TCP port of connected client
remoteptr	string	“mail.example.org”	Reverse DNS (FCrDNS) for remoteip (not always available)
remoteuid	number	106	UNIX socket remote user id (not always available)
localip	string	“10.0.0.1”	IP address of the server
localport	number	25	TCP port of the server
serverid	string	“inbound”	ID of the server
helo	array		HELO information (not always available)
tls	array		TLS information (if TLS was started)
auth	array		AUTH information (not always available)

7.8.1.2.1. HELO

Array item	Type	Example	Description
verb	string	“EHLO”	HELO or EHLO command
host	string	“mail.example.com”	HELO hostname

7.8.1.2.2. TLS

Array item	Type	Example	Description
protocol	string	“TLSv1.3”	The protocol
cipher	string	“ECDHE-RSA-AES256-SHA384”	The cipher
keysize	number	256	The keysize
sni	string	“example.com”	The SNI hostname (not always available)
peercert	array		The peer certificate (if provided by the client)

7.8.1.2.2.1. Peercert

Array item	Type	Example	Description
x509	X509Resource		An X509Resource to be used with the X509 class
error	number	18	The peer certificate validation error (see OpenSSLs SSL_get_verify_result(3))

7.8.1.2.3. AUTH

Array item	Type	Example	Description
mechanism	string	“PLAIN”	SASL mechanism (always in uppercase)
username	string	“mailuser”	SASL username (not always available)

7.8.2. Functions

disconnect.Pass()

Terminate the disconnect script.

Returns

doesn’t return, script is terminated

7.8.3. On script error

On script error Pass() is called.

7.8.4. On implicit termination

If not explicitly terminated then Pass() is called.