ELTEX ESR-1511 - Configuration Example

ESR series service routers.ESR-Series. User manual
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Step Description Command Keys
27 Set the maximum size of email
headers in KB (optional).
esr(config-mailserver)# headers
max-size <SIZE>
<SIZE> - the maximum size of email
headers in KB, takes values from 50 to
200.
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