Avira antivir mailgate Manual
Avira AntiVir MailGate
| HowTo
Status: October 5, 2010
6
The big advantage is that all options which are usually offered by the MTA (SMTP-
AUTH etc.) are maintained. But the functions of MailGate are limited to the basic
commands of the SMTP protocol.
MailGate „Standalone“ as Relay
The classic option – MailGate as simple mail relay – can be very interesting in large
enterprises as the mail structures in large enterprises can be quite complex.
Circumstances like the administration of subsidiaries, the need for a good availability
and redundancies require several installations of MailGate. So the administrative
effort increases. Therefore MailGate should be used as a central relay, e.g. in a
company-wide DMZ.
An example:
AUTH etc.) are maintained. But the functions of MailGate are limited to the basic
commands of the SMTP protocol.
MailGate „Standalone“ as Relay
The classic option – MailGate as simple mail relay – can be very interesting in large
enterprises as the mail structures in large enterprises can be quite complex.
Circumstances like the administration of subsidiaries, the need for a good availability
and redundancies require several installations of MailGate. So the administrative
effort increases. Therefore MailGate should be used as a central relay, e.g. in a
company-wide DMZ.
An example:
Internet
→
external MX
→
Firewall
→
MailGate (DMZ)
→
Firewall
→
internal mail relay
→
internal infrastructure
2 MailGate in action
2.1 MailGate in connection with postfix
MailGate in front of Postfix
The possibility to use MailGate as a local relay in front of postfix is quite rarely used
but easily to configure.
Procedure for this configuration:
Internet
→
MailGate
→
Postfix
→
another MTA / Client (MUA)
You find a detailed installation description of this configuration options in the
MailGate Manual on page 30 (supervise port 25)
MailGate as Content Filter
MailGate can be used in connection with postfix as a so-called content filer. This
constellation is the most frequent solution among our customers. An installation is
relatively easy. Usually postfix already contains the support for content filter.
Procedure for this configuration:
Internet
→
Postfix
→
[REDIRECTION]
→
MailGate
→
[FORWARD]
→
→
Postfix Backdoor
→
another MTA / Client (MUA)