[nmglug] POP3 Server::Request for Info

Edward F. Brown ebrown at lanl.gov
Sat Mar 10 12:50:53 PST 2007


On Sat, March 10, 2007 11:46 am, Gary Sandine wrote:
> Hi,
> On Sat, 2007-03-10 at 09:57 -0800, luis pena wrote:
> [..]
>> We have and exchange 2003 sever and a 2003 domain controller that
>> provides internal authentication and email services. One of the
>> features of exchange is
>> outlook web access (similar to squirrel mail) which allows people
>> outside of our internal network to check the email.
>> I have been tasked with finding a solution for configuring a POP
>> 3server to sit in the DMZ of the firewall. This server will provide
>> several functions:
>> - Serve up Outlook Web Access on an Apache Server(which will require
>> communications with the LDAP-based active directory?)
>> - Be configured have the exchange server initiate the opening of port
>> 25 on the POP 3 server to download email. It is preferred that
>> incoming mail be housed on the POP 3serve after hitting the spam
>> filtration device.
> So... the pop server will basically be a mail server for the Exchange
> server, in order to not expose the Exchange server to the Internet?  Or
> am I missing something (I think I am...)?  I have never heard of a mail
> server pop-downloading mail from another mail server, but I have no
> experience with Exchange servers so far; perhaps that's a normal way to
> set one up.
> This does not address your question, but it's good to think about.  pop
> and Web mail (actually, POP and reading mail with more than one mail
> reader, such as Outlook, whatever, plus Web mail) do not work well
> together.  If local clients are configured to use pop, it's often the
> case that there will be no mail on the server (or only the newest
> messages that haven't yet been pop downloaded then deleted from the
> server) to see with Web mail.
>> Here are my questions:
>> - Is the solution of placing a POP3 server in the DMZ my best option
>> for protecting my exchange server and serving up web access to email?
>> - Are there any items that I have not considered?
>> - Will I need LDAP running on Linux boxen to ""talk" to active
>> directory
>> - What would be the best way to set up a testing sandbox (ad hoc,
>> through the PIX, etc...)
> More on these later I think.  I don't really understand the goal.
>> Thanks to Ed Brown for pointing me towards dovecot as a solution for
>> my POP3 needs. I hope I have been clear and have provided enough
>> information... I am still learning. Thank you in advance.
> I second the dovecot suggestion (for a pop or imap server, or both).
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