Solved

Setting up Dovecot and Postfix between a firewall?

Posted on 2009-04-06
8
525 Views
Last Modified: 2013-12-06
Hey I'm trying to setup a mail server between two computers on a network... I'm not even sure how to ask this question so please bear with me... I've got a basic understanding of Dovecot and Postfix, but am not sure I can do the following:

Computer A outside firewall and accesses the outside world, Computer B inside firewall and accesses all the users.  

 Can I install Postfix on computer A to relay emails to dovecot on computer B?  Or should it be vice versa?  Or should I have Dovecot on both computers with them talking to one another, then postfix on B?....and the bottomline question... why?

Any help or guidance would be amazing...thanks!
0
Comment
Question by:texastank98
  • 4
  • 3
8 Comments
 

Author Comment

by:texastank98
Comment Utility
...anyone....? just a general idea even?
0
 
LVL 1

Accepted Solution

by:
SirTux earned 500 total points
Comment Utility
Well normally one would use 3 firewall segments, inside (LAN), outside (WAN), DMZ. The mailserver should be in the DMZ and the network flow could be managed by the firewall.

LAN users may access DMZ, and WAN
WAN has acces to DMZ mail ports (25,110,143, whatever needed) but not to LAN

HTH
0
 

Author Comment

by:texastank98
Comment Utility
I'm avoiding the use of a DMZ, trying to lock it down as much as possible, so i've just got the first two segments.   outside, to inside, to workstations.
0
Maximize Your Threat Intelligence Reporting

Reporting is one of the most important and least talked about aspects of a world-class threat intelligence program. Here’s how to do it right.

 
LVL 1

Expert Comment

by:SirTux
Comment Utility
why ?? you just need one interface more ...

well in this case you'll need to forward the ports from the router/firewall to the mailserver. theres no other option if you want be able to receive and send email.

I would not recomment this setup. If there's a hole in the server your whole LAN will be easily compromised. DANGEROUS

I really recommend you to put mail/web/allotherinternet servers in a DMZ.
0
 

Author Comment

by:texastank98
Comment Utility
Ok... so maybe the no dmz was a bit preemptive.  I'm just not sure how a DMZ fits in the configuration/how to set one up.
0
 

Author Comment

by:texastank98
Comment Utility
or where to find some documentation that actually helps
0
 
LVL 1

Expert Comment

by:SirTux
Comment Utility
0

Featured Post

Free Trending Threat Insights Every Day

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

Import PST to Exchange using Power Shell new-mailboximportrequest command, you can simply import the PST file into Exchange mailbox or archived. To know How to import PST into Exchange  2013 read the complete article.
Easy CSR creation in Exchange 2007,2010 and 2013
In this video we show how to create an email address policy in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Mail Flow…
To show how to create a transport rule in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Mail Flow >> Rules tab.:  To cr…

763 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now