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Replace an M$ Exchange Server

Due to cost cutting by the bean counters we are being told to find an alternative, low cost(i.e. free) email system.
Having only limited experience in Linux what do I need to configure (RedHat 7.1) Sso that users can connect using Outlook Express or similar retrieve emails and send emails? We have a couple of domains so we don't need to dial-up our ISP etc.

TIA,

Bart.
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Bart van der Wee
Asked:
Bart van der Wee
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1 Solution
 
j2Commented:
Everything is included. Redhat comes with sendmail, and pop/imap daemons to handle that. However, none of the "other" functions will work (as in schedules, booking meetings etc etc)

But for just mail, you are all set. Install linuxconf and you will find the sendmail configureation dialog there.
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Bart van der WeeAuthor Commented:
How abou pop3 mailboxes? Where are these configured?
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j2Commented:
Just give the user an account on the system, and he has a pop3 mailbox. If you do not wwant to give him shell acess, just set the shell to /bin/false (under linuxcionf this is called a "pop account")
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Bart van der WeeAuthor Commented:
how do I enable the pop3 access from outlook express etc?
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j2Commented:
Enable? Just point it to your linuxserver. Done.
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Bart van der WeeAuthor Commented:
I thought I had enabled port110 for pop3 and 25 for smtp but I am unable to telnet into these ports to see if pop/smtp is working. What else do I need to do?
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j2Commented:
Make sure that you acutally have a popdaemon / sendmail installed. And how did you "enable the ports"?
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Bart van der WeeAuthor Commented:
sendmail works on port 25 (SMTP) doesn't it? So in theory I should be able to telnet to port 25 and send email that way or is this not possible?

For pop3 I have enabled that under the xinetd to run internal to xinetd. I can ping the ip address - I am actually using webmin to administer the pc remotely but I unable to connect to the pop3/smtp services.

I am just going to check that the setup didn't install that firewall stuff as that might be stopping this from working.

Bart.

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j2Commented:
Sendmail has to be started to respond, and under 7.1 it _only_ listens to 127.0.0.1 See the Install guide (or Gotchas) for how to fix that. And exactly what did you change in xinetd?
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Bart van der WeeAuthor Commented:
I just enabled pop3
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Bart van der WeeAuthor Commented:
I will check the 127.0.0.1 issue now - thanks for that.
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j2Commented:
Yes, but how? By changing the "Disabled" line in an existing pop definition, or writing your own? And once again: Is pop3d actually installed?
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Bart van der WeeAuthor Commented:
Like I said earlier I am using webmin to administer this box at present and under the config for xinetd there is listed pop3, on opening this by default it is disabled I chose to enable it. How do I check that pop3d is there?
Here is the contents of the ipop3 file found at /etc/xinetd.d
# default: off
# description: The POP3 service allows remote users to access their mail \
#              using an POP3 client such as Netscape Communicator, mutt, \
#            or fetchmail.
service pop3
{
     log_on_success += USERID
     log_on_failure += USERID
     socket_type = stream
     user = root
     type = INTERNAL
     wait = no
}

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j2Commented:
It isnt installed. It should have a "server" line aswell as some other stuff. i would guess that webmin just doent care if it is installed or not. Do a

rpm -qa |grep -i imap

(sinte pop3d and imapd comes from the same package)

Also it should have

disable = no
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Bart van der WeeAuthor Commented:
Command history
> rpm -qa |grep -i imap
imap-2000-9
php-imap-4.0.4pl1-9
imap-devel-2000-9

 
Is what I get. I would seem to be installed I will have a play and try to get it working.
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j2Commented:
Well, something is screwy with the xinetd config file tho...
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Bart van der WeeAuthor Commented:
in what way? should I do a full re-install?
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j2Commented:
I would remove the pop3 xinetd file, and force a reinstall of the imap package, then enable pop3 with linuxconf or checkconfig and see if that works better then webmin.
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Bart van der WeeAuthor Commented:
where in linuxconf do I find this? I am in X windows - do I need to be in a console to see all options?
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Bart van der WeeAuthor Commented:
Points are yours thanks for the help - still no further but just doing some housekeeping =)
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