Steve schrieb:
> OK, I tried to setup sendmail (v 8) on my CentOS v 5 machine.
> I have also installed Squirrelmail.
> Apparently, the config is not so bad.
> I have just pointed the A and MX record, to my machine.
>
> I can now, send email "outside" and receive emails (from outside), via
> Squirrelmail.

Ok. That clears up a lot already.

> Now, nest step : I tend to connect my email client (evolution) to the
> server and try to download my emails, locally.
> For this, I have started Dovecot. Basic conf, seems to be OK
> I can download my emails locally, using my login name (Linux user name)
> and password (linux user)

That means access to your mail store via POP3 or IMAP works. That's
what Dovecot is for. Sending mail is a different story entirely.

> Receiving locally email is great, but sending email from my email
> client(evolution) would be fantastic !!!

I am still missing an essential detail: do you run Evolution on the
same machine as the mail server (Sendmail, Squirrelmail, Dovecot),
or on a separate PC? If the latter, are the two in the same LAN?

> I tried to setup the SMTP as :
>
> Server type : SMTP
> Server : < IP address of the machine : 192.xx.xx.xx>
> Encryption : NO
> Authentification :
> * type : PLAIN
> * username : <Linux Username>

Depending on the answer to my question above, that may or may not
be the right way to set this up.

> When I try sending, a pop up message from Evolution appears saying :
> connection refused

That looks as if Sendmail isn't even listening on the port Evolution
tries to connect to. What happens if you try the command

telnet 192.xx.xx.xx 25

from a command line on your client? (Btw: I wonder what you are
trying to achieve by disguising the IP address of your server here.)
Is anything appearing in your Sendmail log when you try that?
Do you see log entries from successful mail deliveries from the
outside before and/or after that?
What does

netstat -ant | fgrep :25

say?

> Is there a simple way to make Evolution communicate with Sendmail ?

Definitely. Millions of people have succeeded in doing so. :-)
In fact, it's the normal behaviour of both Evolution and Sendmail,
so obviously there is something not quite right somewhere in your
setup. We just have to find it. ;-)

HTH
T.

--
Please excuse my bad English/German/French/Greek/Cantonese/Klingon/...