User manual

- BaseWall VPN 6000 user manual -
11 E-mail
Normally the firewall is configured to accept all email send to one or more mail
domains. This domain is the name behind the '@' of an email address. Every
mail is accepted, checked and send on towards an internal mail server.
Email send from outside the firewall for unknown domains are automatically
dropped and an error notice is send back to the origin of the email.
11.1 First mail domain
Click on the “Mail” tab when in the configuration part of the interface.
➔ Enter the complete host name of the firewall.
De part after the first dot is automatically used as the primary mail domain.
Mail that is generated by the firewall due to found email viruses or unwanted
email is send with this name as sender.
➔ Enter the DNS host name of the firewall. Often identical to the host name.
Some mail servers are very strict on identification. These servers require the
firewall to introduce itself with the exact host name as the (reverse) DNS-
record that points to the firewall. This field should be an exact copy of the DNS
entry of the firewall.
➔ Enter the IP-address of the mail server of the ISP into the “SMTP/Relay host”
field.
This field can be left empty, then the DNS system of the Internet is used to
deliver email directly to the recipients system.
➔ Enter the IP-address of the internal mail server into the “Transport mapping”
field.
When using the build-in POP3 server, the transport-mapping should be empty
or 'local'.
11.2 Administrator mailbox
When dealing with email for a corporation someone should monitor the state of
the email system. This task should be given to a person who will be called
Postmaster. Whenever an email is dropped or delayed this person will be
notified of the occurrence. The postmaster can act on communication problems
this way.
It is vitally important that this person has a working, reachable email address.
The aliases in the mail screen are both important and dangerous. If they are
incorrectly configured there is a large change the mail system runs into
problems, like mail loops and/or the loosing of email.
Enter the complete email address of the administrator into the “Root: (system
mail)” field. Again: it's important that this email address is reachable and valid.
The other aliases are provided to split the system mail up to several accounts.
When this is not wished for, you may leave them on "root", effectively
forwarding the mail to the system administrator.
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