ELTEX ESR Series User Manual

ESR-Series. User manual
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Step Description Command Keys
28 Set the maximum email size in KB
(optional).
esr(config-mailserver)# mail max-
size <SIZE>
<SIZE> - the maximum email
size in KB, takes values from
5120 to 51200.
29 Enable mandatory HELO or EHLO SMTP
command when establishing an SMTP
session (optional).
esr(config-mailserver)# smtp helo-
required
30 Enable the VRFY SMTP command on
the mail server during an SMTP session
(optional).
esr(config-mailserver)# smtp vrfy-
enable
31 Enable mail server. esr(config-mailserver)# enable
13.9.2 Configuration example:
Objective:
Configure the "Antispam" service on ESR to work as an SMTP Proxy to analyze e-mail addressed to the mail
server located in the enterprise network and serving the eltex-co.ru domain.
Solution:
Ensure that the MX record for the domain eltex-co.ru points to the ESR IP address:
esr@eltex:~$ dig +noall +answer eltex-co.ru MX
eltex-co.ru. 3548 IN MX 10 mail-gate.eltex-co.ru.
esr@eltex:~$ dig +noall +answer mail-gate.eltex-co.ru A
mail-gate.eltex-co.ru. 3453 IN A 95.171.220.11

ELTEX ESR Series Specifications

General

Model	ESR Series
Category	Network Router
Manufacturer	ELTEX
Management	Web interface, CLI, SNMP
Operating Temperature	0°C to 40°C
Dimensions	Varies by model
Weight	Varies by model
Routing Protocols	OSPF, BGP
WAN Interfaces	Ethernet, SFP
LAN Interfaces	Ethernet, SFP
VPN Support	IPsec, L2TP, PPTP
Firewall	Stateful packet inspection, ACLs
Power over Ethernet (PoE)	Available on some models
QoS	Traffic prioritization