User guide

Chapter 6 – RouteFinder Software
Multi-Tech Systems, Inc. RouteFinder RF850/860 User Guide (PN S000400E) 73
Proxy > SMTP Proxy
SMTP Proxy
Status
To enable SMTP, check the Status box and click the Save button. When enabled, the SMTP
Proxy starts functioning and listens on port 25. When Status is checked, the screen expands to
display the following fields.
Accepted Incoming Domains
All the domains for which the SMTP Proxy can accept emails must be listed here. The domain
for which emails are accepted must be registered with the DNS server. Thus, the SMTP Proxy
accepts only emails which are addressed to the domains listed here.
Domains will be listed in the drop-down box from which they can be deleted, if desired.
Mail Relay
All the networks that can use the SMTP Proxy as a relay agent are configured here. A list of the
various networks configured using this software is displayed. You can add networks that can
use the SMTP proxy as a relay agent by using the Add button. All other networks not included
in this list can send emails to only those domains in the Accepted Incoming Domains list. The IP
address of the mail server needs to be added in the list of relay networks.
Add SMTP Routes
The SMTP Proxy decides on the path or the route to be taken for any domains based on the
SMTP Routes configuration. Thus, the domain name and the IP address of the MTA (Mail
Transfer Agent) to which mails are destined to this domain are to be forwarded are listed here.
Example: xyz.com:192.168.1.34. Any email to domain xyz.com is forwarded to 192.168.1.34,
which is the IP address of an MTA. If the SMTP route is not mentioned for a domain, then a
DNS-lookup decides where this email is to be forwarded or else a default route can be specified
so that email to any domain is forwarded to the default gateway. Example: 192.168.1.10.
Domain and Host
The fully qualified Domain Name and Host of the SMTP Proxy must be entered here.
Queue Cleanup
Click the Clean button to delete emails held in the relay agent's mail queue. All mails waiting to be
delivered will be cleaned up. This option is to be used with extreme care.
Mail Size Configuration
Enter the maximum mail size in Kbytes that will be allowed by the SMTP / Spam filtering process.
Bypass SMTP Virus / Spam Filtering
Enter the minimum mail size in Kbytes that will be allowed to bypass the SMTP / Spam filtering
process.
Virus Protection
Check the box to enable SMTP Virus Protection (virus scanning) for SMTP traffic that passes
through the RouteFinder. Both incoming and outgoing emails are scanned, if they are sent via the
SMTP proxy. If a valid virus license scanner license key is not entered, this option will not be
displayed.
An anti-virus license must be purchased from Multi-Tech in order to use virus protection, and the
license can be uploaded to the RouteFinder from the Administration > License Keys screen.
Remote SMTP Virus Quarantine
Check the Remote SMTP Virus Quarantine Status box to activate the remote quarantining of
SMTP virus emails. If activated, then local quarantining no longer exists.
Action Taken on Virus Emails
Select the Change Action on Infected Mails to be taken on infected emails for SMTP traffic.
If the action selected is Notify, options to send the information to the administrator / sender /
recipient will be displayed. Notification regarding infected mails will be send based on these
settings.
If the action is Bloc
k, the mail will be silently dropped.
In both cases, the infected emails will be stored in the virus quarantine folder of the RouteFinder.
The administrator can view the emails, delete them, or forward them to a specified email ID.
Click the Save button after a Change Action.