Mail Proxy

This section covers the following:


Mail Proxy Transparency

This feature of Mail proxy works for outgoing mails. Enable the feature when the internal mail domain is public and should not be overwritten by the public domain of the proxy.

This feature is enabled by setting the following flag in the \etc\proxy\proxy.cfg file

[Extra Configuration]Mailproxysupportstransparency=1


Mail Proxy Process Multiple MX Records

Mail proxy can now process multiple MX records. If there is a list of MX records in the DNS requests for the mail domain, proxy can now go to the next record in case of a failover at the first instance using the following parameter in proxy.cfg.

The previous proxy -m has been moved to the proxy.cfg file.

[Extra Configuration]ProcessMultipleMXRecordsOfDomain=1


Mail Proxy Multi-domain Support

This feature enables the Novell BorderManager 3.8 Mail proxy to proxy multiple domains. Enabling this feature of mail proxy protects networks with multiple mail domains. The feature works for both incoming and outgoing e-mails. For incoming e-mail you can have multiple internal mail servers proxied by the mail proxy retaining their respective public domains, while outgoing e-mail from private internal domains is proxied with the respective public domains.

For mail proxy multi-domain support the first primary domain is taken from the NWAdmn Mail proxy primary domain. Other primary domain names and corresponding mail server names are added in the sys:\etc\proxy\proxy.cfg file under the section.

To enable the feature change, the value of the MultiDomain line to as many mail proxies as you want to configure (N is the value of the integer).

[Multiple Domain Support]MultiDomain1=InternalMailServerName1/PrimaryDomain1MultiDomain2=InternalMailServerName2/PrimaryDomain2MultiDomainN=InternalMailServerNameN/PrimaryDomainN

For incoming multiple domain support, enable the following line in the file:

[Extra Configuration]IncomingMultiDomainSupport=1


Additional POP3 Server

With this feature, the proxy's secondary IP address is added as a secondary IP address (automatically bound) to the server and the POP3 servers listen in all the mentioned addresses at port 110. This means that multiple POP3 servers can be proxied at the same time. To enable this feature, add the following to proxy.cfg.

[POP3 Additional Servers]server1=31.0.0.2/164.99.146.124server2=31.0.0.3/10.0.0.2server3=31.0.0.4/10.0.0.3server4=31.0.0.5/10.0.0.4server5=31.0.0.6/10.0.0.5server6=31.0.0.7/10.0.0.6server7=31.0.0.8/10.0.0.7server8=31.0.0.9/10.0.0.8server9=31.0.0.10/10.0.0.9


Additional Flags

The following flags for mail Proxy server can be enabled. BM_Incoming_Relay should be set to 1 to prevent incoming e-mails from being relayed. If Primary Mail Domain is not configured through NWAdmn set, the BM_Domain to Primary Domain through sys:\etc\proxy\proxy.cfg. BM_Domain is a mandatory parameter.

[BM Mail Proxy]BM_Incoming_Relay=1BM_Domain=PrimaryDomain

BM_Proxy_Domain=Proxy Domain Name

The following flag is used to prevent looping when an e-mail is sent to the proxy IP address:

[Extra Configuration]

RejectMailToProxyIPAddress=1