Can some one help with a problem I am having with SMTP
mail relay using Sonicwall and Linux server in a DMZ.
Thanks.
Gerald
Configuration
-------------
WAN ||
----------------------
gate.abc.com | SonicWall |
----------------------
LAN | | DMZ
---- ---
exc.abc.com |A| |B| mail.abc.com
---- ---
SonicWall is using NATting for the LAN side.
With the SonicWall model we have, all servers
in DMZ need a routable IP address.
A (exc.abc.com) is a Windows NT 4.0 running MS
Exchange server. Domain is ABC. All userids
within the Exchange Server are configured as
[EMAIL PROTECTED]
B (mail.abc.com) is a Red Hat Linux Server, running
SMTP. It has a routable internet address, is within
the same subnet as the gate.abc.com, and use the
same router/WAN gateway address.
Problem's experiencing
----------------------
Internet mail is being received by the mail.abc.com
without any problem. However, I cannot figure out
how to relay the mail from the Linux server to the
Exchange Server on the LAN?
Questions
---------
1) Can mail be routed from a server with a
routable internet address to a server inside
a LAN?
2) If it cannot be routed, is the next best
approach to use something like POP3?
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